{"id":1979444,"date":"2026-06-05T03:41:39","date_gmt":"2026-06-05T00:41:39","guid":{"rendered":"https:\/\/analyse.optim.biz\/?p=1979444"},"modified":"2026-06-05T03:41:39","modified_gmt":"2026-06-05T00:41:39","slug":"built-for-the-ocean-tailored-for-the-daily-grind-the-versatility-of-grand-seikos-ushio","status":"publish","type":"post","link":"https:\/\/analyse.optim.biz\/?p=1979444","title":{"rendered":"Built for the Ocean, Tailored for the Daily Grind: The Versatility of Grand Seiko\u2019s &#8220;Ushio&#8221;"},"content":{"rendered":"<p>[analyse_image type=&#8221;featured&#8221; src=&#8221;https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-tw.jpg?w=1080&amp;cbr=1&amp;q=90&amp;fit=max&#8221;]<\/p>\n<div class=\"col-post-body col\">\n<div class=\"row post-body\">\n<aside class=\"post-body-sidebar\">\n<div class=\"post-body-sidebar-upper\">\n<div class=\"post-body-sidebar-category d-none d-lg-block\">\n<p>    Watches\n                                                                                                    <\/p><\/div>\n<div class=\"post-body-sidebar-published d-none d-lg-block\"><time>Jun 4, 2026<\/time><\/div>\n<ul class=\"post-body-sidebar-hype-comments-container list-unstyled d-none d-lg-block\">\n<li><span class=\"hype-count yellow\"><br \/>\n             14.1K<br \/>\n    <\/span><\/p>\n<div class=\"floating-tooltip\" role=\"tooltip\"><span>Views<\/span><\/div>\n<\/li>\n<li><span class=\"disqus-comment-count\"><span>0<\/span><span>\u00a0<\/span><span class=\"d-none d-sm-inline text\">Comments<\/span><\/span>\n<div class=\"floating-tooltip\" role=\"tooltip\"><span>Comments<\/span><\/div>\n<\/li>\n<li><span class=\"text\">Save<\/span><\/li>\n<\/ul>\n<div class=\"post-body-sidebar-author d-none d-lg-block\">\n<hr class=\"sidebar-divider share-divider\"><span class=\"presented-by\">Presented by<br \/>\n                            Grand Seiko<br \/>\n                    <\/span><\/div>\n<hr class=\"sidebar-divider d-none d-lg-block\">\n<div class=\"post-body-sidebar-share d-none d-lg-block\">\n<h6>Share this article<\/h6>\n<\/div>\n<\/div>\n<\/aside>\n<article class=\"post-body-article\">\n<div class=\"post-gallery-container small inner-media\">\n<div class=\"gallery-container post-gallery-contain\" role=\"region\" aria-label=\"Built for the Ocean, Tailored for the Daily Grind: The Versatility of Grand Seiko\u2019s &quot;Ushio&quot;\">\n<div class=\"hb-gallery before-booted full-screen-enabled  \" data-images=\"[{&quot;image&quot;:{&quot;description&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;image_caption&quot;:null,&quot;small&quot;:&quot;https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-001.jpg?w=480&amp;cbr=1&amp;q=90&amp;fit=max&quot;,&quot;medium&quot;:&quot;https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-001.jpg?w=720&amp;cbr=1&amp;q=90&amp;fit=max&quot;,&quot;large&quot;:&quot;https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-001.jpg?w=1080&amp;cbr=1&amp;q=90&amp;fit=max&quot;,&quot;xlarge&quot;:&quot;https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-001.jpg?w=1440&amp;cbr=1&amp;q=90&amp;fit=max&quot;,&quot;full&quot;:&quot;https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-001.jpg?w=1440&amp;cbr=1&amp;q=90&amp;fit=max&quot;},&quot;src&quot;:&quot;https:\/\/hypebeast.com\/image\/2026\/05\/24\/grand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-001.jpg&quot;,&quot;alt&quot;:&quot;Grand Seiko Spring Drive U.F.A. Ushio 300 Diver Info SLGB023 Ushio Blue SLGB025 Ushio Green&quot;,&quot;width&quot;:1400,&quot;height&quot;:933,&quot;credit&quot;:&quot;Grand Seiko&quot;,&quot;caption&quot;:&quot;&quot;,&quot;creditKey&quot;:&quot;general&quot;,&quot;description&quot;:&quot;&quot;,&quot;annotations&quot;:null,&quot;shop&quot;:{&quot;url&quot;:null,&quot;label&quot;:&quot;Shop Now&quot;}},{&quot;image&quot;:{&quot;description&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;image_caption&quot;:null,&quot;small&quot;:&quot;https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-002.jpg?w=480&amp;cbr=1&amp;q=90&amp;fit=max&quot;,&quot;medium&quot;:&quot;https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-002.jpg?w=720&amp;cbr=1&amp;q=90&amp;fit=max&quot;,&quot;large&quot;:&quot;https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-002.jpg?w=1080&amp;cbr=1&amp;q=90&amp;fit=max&quot;,&quot;xlarge&quot;:&quot;https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-002.jpg?w=1440&amp;cbr=1&amp;q=90&amp;fit=max&quot;,&quot;full&quot;:&quot;https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-002.jpg?w=1440&amp;cbr=1&amp;q=90&amp;fit=max&quot;},&quot;src&quot;:&quot;https:\/\/hypebeast.com\/image\/2026\/05\/24\/grand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-002.jpg&quot;,&quot;alt&quot;:&quot;Grand Seiko Spring Drive U.F.A. Ushio 300 Diver Info SLGB023 Ushio Blue SLGB025 Ushio Green&quot;,&quot;width&quot;:1400,&quot;height&quot;:933,&quot;credit&quot;:&quot;Grand Seiko&quot;,&quot;caption&quot;:&quot;&quot;,&quot;creditKey&quot;:&quot;general&quot;,&quot;description&quot;:&quot;&quot;,&quot;annotations&quot;:null,&quot;shop&quot;:{&quot;url&quot;:null,&quot;label&quot;:&quot;Shop Now&quot;}}]\" role=\"list\">\n<div class=\"carousel-cell landscape\" data-gallery-index=\"1\" role=\"listitem\">\n<div class=\"carousel-cell-inner-wrapper\">\n<div class=\"carousel-cell-image-wrapper annotation-container fixed-ratio-3-2\">\n                                                                                                        <source data-srcset=\"https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-001.jpg?q=90&amp;w=1400&amp;cbr=1&amp;fit=max\" media=\"(min-width: 1260px)\" \/><\/div>\n<p><span class=\"gallery-image-index\"><span class=\"image-index \" aria-live=\"polite\">1 of 2<\/span><\/span><\/p>\n<div class=\"gallery-meta-container credit-wrapper\">\n<div class=\"credit general-general\">Grand Seiko<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"carousel-cell landscape\" data-gallery-index=\"2\" role=\"listitem\">\n<div class=\"carousel-cell-inner-wrapper\">\n<div class=\"carousel-cell-image-wrapper annotation-container fixed-ratio-3-2\">\n                                                                                                        <source data-srcset=\"https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-002.jpg?q=90&amp;w=1400&amp;cbr=1&amp;fit=max\" media=\"(min-width: 1260px)\" \/><\/div>\n<p><span class=\"gallery-image-index\"><span class=\"image-index \" aria-live=\"polite\">2 of 2<\/span><\/span><\/p>\n<div class=\"gallery-meta-container credit-wrapper\">\n<div class=\"credit \">Grand Seiko<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div id=\"post-body-top-bar\" class=\"post-body-top-bar d-block d-lg-none\">\n<div class=\"row\">\n<div class=\"post-body-top-bar-share-meta-container\">\n<div class=\"post-body-top-bar-meta\"><span class=\"post-body-top-bar-category\"><\/p>\n<p>    Watches<br \/>\n                                                    <\/span><span class=\"post-body-top-bar-published\"><time>Jun 4, 2026<\/time><\/span><\/div>\n<\/div>\n<div class=\"post-body-top-bar-hype-comments-container \"><span class=\"hype-count yellow\"><br \/>\n             14.1K<br \/>\n    <\/span><\/p>\n<div class=\"floating-tooltip\" role=\"tooltip\"><span>Views<\/span><\/div>\n<p><span class=\"disqus-comment-count\"><span>0<\/span><span>\u00a0<\/span><span class=\"d-none d-none text\">Comments<\/span><\/span><\/p>\n<div class=\"floating-tooltip\" role=\"tooltip\"><span>Comments<\/span><\/div>\n<p><span class=\"text\">Save<\/span><\/div>\n<\/div>\n<\/div>\n<div class=\"post-body-content\">\n<p>Following the groundbreaking unveiling of the Spring Drive Caliber 9RB2 at last year\u2019s Watches and Wonders Geneva, Grand Seiko has extended this pinnacle of precision into the Evolution 9 Collection.<\/p>\n<p>The introduction of the new Caliber 9RB1 movement marks a significant evolution, bringing ultra-precise mainspring-powered technology into a format designed for everyday versatility and enduring strength. Hand-assembled by highly skilled craftsmen and women at the Shinshu Watch Studio, the Caliber 9RB1 achieves its remarkable \u00b120 seconds per year accuracy through a meticulously vacuum-sealed crystal oscillator and an advanced low-power IC that minimizes the impact of external factors such as temperature, humidity, static electricity and light.<\/p>\n<p>This technical mastery is paired with a deeply poetic, nature-inspired aesthetic through the \u201cUshio\u201d design theme, which translates to \u201ctide\u201d in Japanese. Reflecting the waters that surround the Japanese archipelago \u2013 a timeless source of inspiration in Japan\u2019s culture and art \u2013 the timepieces beautifully balance technical innovation with organic design. The collection features two distinct gradient dial expressions that capture the moving currents of the sea. The blue dial reflects the vast expanse of the deep ocean as light streams through its depths, while the green dial draws from the tranquil beauty of shallow coastal waters near the shore. Both variations utilize meticulously crafted, multi-faceted indices and diamond-cut edges to deliver exceptional brilliance and legibility at a glance.\n<\/p>\n<div class=\"shortcode-slider before-booted full-screen-enabled light\" data-width=\"100%\" data-animate=\"slide\" data-slideshow data-loop data-slideshowspeed=\"7000\" data-group-cells=\"1\">\n<div class=\"flickity-carousel\">\n<div class=\"flickity-carousel-cell\" data-gallery-index=\"1\"><span class=\"gallery-image-index\"><span class=\"image-index\">1 of 6<\/span><\/span><\/p>\n<div class=\"wp-caption alignnone\">\n                                    <source srcset=\"https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-005.jpg?q=90&amp;w=2180&amp;format=jpeg&amp;cbr=1&amp;fit=max\" media=\"<br \/>\n                                        (min-width: 1200px) and (-webkit-min-device-pixel-ratio: 2),<br \/>\n                                        (min-width: 1200px) and (min-resolution: 192dpi)<br \/>\n                                    \" \/><\/p>\n<p class=\"wp-caption-text credit-wrapper\"><span class=\"credit\">Grand Seiko<\/span><\/p>\n<\/div>\n<\/div>\n<div class=\"flickity-carousel-cell\" data-gallery-index=\"2\"><span class=\"gallery-image-index\"><span class=\"image-index\">2 of 6<\/span><\/span><\/p>\n<div class=\"wp-caption alignnone\">\n                                    <source srcset=\"https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-004.jpg?q=90&amp;w=2180&amp;format=jpeg&amp;cbr=1&amp;fit=max\" media=\"<br \/>\n                                        (min-width: 1200px) and (-webkit-min-device-pixel-ratio: 2),<br \/>\n                                        (min-width: 1200px) and (min-resolution: 192dpi)<br \/>\n                                    \" \/><\/p>\n<p class=\"wp-caption-text credit-wrapper\"><span class=\"credit\">Grand Seiko<\/span><\/p>\n<\/div>\n<\/div>\n<div class=\"flickity-carousel-cell\" data-gallery-index=\"3\"><span class=\"gallery-image-index\"><span class=\"image-index\">3 of 6<\/span><\/span><\/p>\n<div class=\"wp-caption alignnone\">\n                                    <source srcset=\"https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-003.jpg?q=90&amp;w=2180&amp;format=jpeg&amp;cbr=1&amp;fit=max\" media=\"<br \/>\n                                        (min-width: 1200px) and (-webkit-min-device-pixel-ratio: 2),<br \/>\n                                        (min-width: 1200px) and (min-resolution: 192dpi)<br \/>\n                                    \" \/><\/p>\n<p class=\"wp-caption-text credit-wrapper\"><span class=\"credit\">Grand Seiko<\/span><\/p>\n<\/div>\n<\/div>\n<div class=\"flickity-carousel-cell\" data-gallery-index=\"4\"><span class=\"gallery-image-index\"><span class=\"image-index\">4 of 6<\/span><\/span><\/p>\n<div class=\"wp-caption alignnone\">\n                                    <source srcset=\"https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-006.jpg?q=90&amp;w=2180&amp;format=jpeg&amp;cbr=1&amp;fit=max\" media=\"<br \/>\n                                        (min-width: 1200px) and (-webkit-min-device-pixel-ratio: 2),<br \/>\n                                        (min-width: 1200px) and (min-resolution: 192dpi)<br \/>\n                                    \" \/><\/p>\n<p class=\"wp-caption-text credit-wrapper\"><span class=\"credit\">Grand Seiko<\/span><\/p>\n<\/div>\n<\/div>\n<div class=\"flickity-carousel-cell\" data-gallery-index=\"5\"><span class=\"gallery-image-index\"><span class=\"image-index\">5 of 6<\/span><\/span><\/p>\n<div class=\"wp-caption alignnone\">\n                                    <source srcset=\"https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-007.jpg?q=90&amp;w=2180&amp;format=jpeg&amp;cbr=1&amp;fit=max\" media=\"<br \/>\n                                        (min-width: 1200px) and (-webkit-min-device-pixel-ratio: 2),<br \/>\n                                        (min-width: 1200px) and (min-resolution: 192dpi)<br \/>\n                                    \" \/><\/p>\n<p class=\"wp-caption-text credit-wrapper\"><span class=\"credit\">Grand Seiko<\/span><\/p>\n<\/div>\n<\/div>\n<div class=\"flickity-carousel-cell\" data-gallery-index=\"6\"><span class=\"gallery-image-index\"><span class=\"image-index\">6 of 6<\/span><\/span><\/p>\n<div class=\"wp-caption alignnone\">\n                                    <source srcset=\"https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-008.jpg?q=90&amp;w=2180&amp;format=jpeg&amp;cbr=1&amp;fit=max\" media=\"<br \/>\n                                        (min-width: 1200px) and (-webkit-min-device-pixel-ratio: 2),<br \/>\n                                        (min-width: 1200px) and (min-resolution: 192dpi)<br \/>\n                                    \" \/><\/p>\n<p class=\"wp-caption-text credit-wrapper\"><span class=\"credit\">Grand Seiko<\/span><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p>While it\u2019s built as a\u00a0high-performance diving watch with 300 meters of water resistance, the implementation of the compact Caliber 9RB1 allowed Grand Seiko to craft its most wearable professional sports silhouette yet. Measuring just 40.8mm in diameter and 12.9mm in thickness, it is the smallest diver\u2019s watch in Grand Seiko\u2019s lineup, moving it away from purely utilitarian constraints and transforming it into a sophisticated accessory suitable for any occasion. The watch\u2019s profile features broad lugs designed to capture light across a wide surface, giving it a commanding wrist presence despite its compact dimensions. This refined architecture ensures that the watch easily transitions from formal settings to active environments, offering a comfortable fit for a wide range of wrist sizes.\n<\/p>\n<p>The physical refinement of the timepiece is further elevated by the choice of high-performance materials and functional innovations. Both the case and bracelet are sculpted from High-Intensity Titanium, a material that is roughly 30% lighter than traditional stainless steel and boasts a bright, lustrous tone. This provides an exceptional balance of scratch resistance, robustness, and lightweight comfort for daily wear.\n<\/p>\n<p>Furthermore, the watch introduces an evolved bracelet design featuring a newly developed locking extension clasp with a sophisticated micro-adjustment system. This mechanism allows for up to 6mm of fine-tuning across a three-step micro-adjustment alongside an 18mm extension feature, while a secure GS emblem on the clasp functions as a locking mechanism to prevent accidental release. The result is a highly accurate, versatile masterpiece that seamlessly integrates ultimate precision into a modern, lifestyle-oriented format.\n<\/p>\n<p>Explore the new Spring Drive U.F.A. Ushio 300 Diver watches through Grand Seiko\u2019s official website and physical boutiques.<\/p>\n<div class=\"show-article\">\n<p>                                                            Read Full Article<\/p><\/div>\n<\/div>\n<footer>\n<div class=\"related-stories-main-wrapper\">\n<h3>Related Stories<\/h3>\n<div class=\"stories-container\" data-layer-list-name=\"related_stories\" data-layer-list-offset=\"0\" data-layer-list-child-selector=\".story-item\">\n<div class=\"story-item\" data-layer-item-id=\"6733526\" data-layer-item-blog-id=\"1\" data-layer-item-type=\"post\"><span>&gt;<\/span>Seiko Honors PADI\u2019s 60th Anniversary With a Limited-Edition Prospex Diver\n                                                                        <\/div>\n<div class=\"story-item\" data-layer-item-id=\"6733455\" data-layer-item-blog-id=\"1\" data-layer-item-type=\"post\"><span>&gt;<\/span>Formula 1 Signs 10-Year Contract Extension for the Las Vegas Grand Prix\n                                                                        <\/div>\n<div class=\"story-item\" data-layer-item-id=\"6733575\" data-layer-item-blog-id=\"1\" data-layer-item-type=\"post\"><span>&gt;<\/span>Supreme and La Martina Tap Jacob &amp; Co. for a Premium Spring 2026 Collection\n                                                                        <\/div>\n<\/div>\n<\/div>\n<div class=\"article-email-signup-wrapper impression-tracker\">\n<h3>We got you covered. Don\u2019t miss out on the latest news by signing up for our newsletters.<\/h3>\n<div class=\"terms\">By subscribing, you agree to our Terms of Use and Privacy Policy.<\/div>\n<\/div>\n<div class=\"post-body-author d-block d-lg-none\">\n<hr class=\"sidebar-divider share-divider\"><span class=\"presented-by\">Presented by<br \/>\n                            Grand Seiko<br \/>\n                    <\/span><\/div>\n<div class=\"post-body-share d-block d-lg-none\">\n<hr class=\"sidebar-divider\">\n<h6>Share this article<\/h6>\n<\/div>\n<div class=\"post-body-content-tags\">\n<div class=\"body collapsed\">\n<p>    Grand SeikoGrand Seiko Spring Drive\n                                                            <\/p><\/div>\n<\/div>\n<section class=\"post__body__author_info\">\n<div class=\"post__body__author_info__inner\"><img decoding=\"async\" src=\"https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F06%2F05%2Fzoe-300.jpg?w=100&amp;cbr=1&amp;q=90&amp;fit=max\" alt=\"Zoe Leung\" class=\"post__body__author_info__avatar\"><\/p>\n<div class=\"post__body__author_info__body\">\n<p>                    Zoe Leung<\/p>\n<p>                                    <span class=\"post__body__author_info__title\">Senior Editor<\/span><\/div>\n<\/div>\n<div class=\"post__body__author_info__bio_wrapper\">\n<p class=\"post__body__author_info__bio\">Zoe Leung is a Senior Editor at Hypebeast, where she has been shaping the publication\u2019s coverage of horology, art, design, and culture since 2023. Her extensive watch reporting spans exclusive manufacture visits with Maisons like Zenith, Jaeger-LeCoultre, and Grand Seiko, as well as insightful conversations with industry leaders and artisans. Beyond watches, she regularly spotlights international creatives and cultural phenomena, utilizing her knowledge of global music and entertainment subcultures to deliver narratives that explore the worldwide influence of contemporary visual storytelling and cross-cultural artistry.<\/p>\n<\/div>\n<\/section>\n<\/footer>\n<\/article>\n<\/div>\n<div id=\"post-footer\" class=\"post-footer row\">\n<div class=\"col-comments\">\n<div id=\"comments\" class=\"post-comments none \">\n<header>\n<div class=\"heading\"><span class=\"comment-count\">0<\/span><span>Comments<\/span><\/div>\n<div class=\"comment-dropdown-tooltip\">\n<ul>\n<li>\n<li><\/ul>\n<\/div>\n<\/header>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"row post-body\">\n<aside class=\"post-body-sidebar\">\n<div class=\"post-body-sidebar-upper\">\n<div class=\"post-body-sidebar-category d-none d-lg-block\">\n<p>    Watches\n                                                                                                    <\/p><\/div>\n<div class=\"post-body-sidebar-published d-none d-lg-block\"><time>Jun 4, 2026<\/time><\/div>\n<ul class=\"post-body-sidebar-hype-comments-container list-unstyled d-none d-lg-block\">\n<li><span class=\"hype-count yellow\"><br \/>\n             14.1K<br \/>\n    <\/span><\/p>\n<div class=\"floating-tooltip\" role=\"tooltip\"><span>Views<\/span><\/div>\n<\/li>\n<li><span class=\"disqus-comment-count\"><span>0<\/span><span>\u00a0<\/span><span class=\"d-none d-sm-inline text\">Comments<\/span><\/span>\n<div class=\"floating-tooltip\" role=\"tooltip\"><span>Comments<\/span><\/div>\n<\/li>\n<li><span class=\"text\">Save<\/span><\/li>\n<\/ul>\n<div class=\"post-body-sidebar-author d-none d-lg-block\">\n<hr class=\"sidebar-divider share-divider\"><span class=\"presented-by\">Presented by<br \/>\n                            Grand Seiko<br \/>\n                    <\/span><\/div>\n<hr class=\"sidebar-divider d-none d-lg-block\">\n<div class=\"post-body-sidebar-share d-none d-lg-block\">\n<h6>Share this article<\/h6>\n<\/div>\n<\/div>\n<\/aside>\n<article class=\"post-body-article\">\n<div class=\"post-gallery-container small inner-media\">\n<div class=\"gallery-container post-gallery-contain\" role=\"region\" aria-label=\"Built for the Ocean, Tailored for the Daily Grind: The Versatility of Grand Seiko\u2019s &quot;Ushio&quot;\">\n<div class=\"hb-gallery before-booted full-screen-enabled  \" data-images=\"[{&quot;image&quot;:{&quot;description&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;image_caption&quot;:null,&quot;small&quot;:&quot;https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-001.jpg?w=480&amp;cbr=1&amp;q=90&amp;fit=max&quot;,&quot;medium&quot;:&quot;https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-001.jpg?w=720&amp;cbr=1&amp;q=90&amp;fit=max&quot;,&quot;large&quot;:&quot;https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-001.jpg?w=1080&amp;cbr=1&amp;q=90&amp;fit=max&quot;,&quot;xlarge&quot;:&quot;https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-001.jpg?w=1440&amp;cbr=1&amp;q=90&amp;fit=max&quot;,&quot;full&quot;:&quot;https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-001.jpg?w=1440&amp;cbr=1&amp;q=90&amp;fit=max&quot;},&quot;src&quot;:&quot;https:\/\/hypebeast.com\/image\/2026\/05\/24\/grand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-001.jpg&quot;,&quot;alt&quot;:&quot;Grand Seiko Spring Drive U.F.A. Ushio 300 Diver Info SLGB023 Ushio Blue SLGB025 Ushio Green&quot;,&quot;width&quot;:1400,&quot;height&quot;:933,&quot;credit&quot;:&quot;Grand Seiko&quot;,&quot;caption&quot;:&quot;&quot;,&quot;creditKey&quot;:&quot;general&quot;,&quot;description&quot;:&quot;&quot;,&quot;annotations&quot;:null,&quot;shop&quot;:{&quot;url&quot;:null,&quot;label&quot;:&quot;Shop Now&quot;}},{&quot;image&quot;:{&quot;description&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;image_caption&quot;:null,&quot;small&quot;:&quot;https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-002.jpg?w=480&amp;cbr=1&amp;q=90&amp;fit=max&quot;,&quot;medium&quot;:&quot;https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-002.jpg?w=720&amp;cbr=1&amp;q=90&amp;fit=max&quot;,&quot;large&quot;:&quot;https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-002.jpg?w=1080&amp;cbr=1&amp;q=90&amp;fit=max&quot;,&quot;xlarge&quot;:&quot;https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-002.jpg?w=1440&amp;cbr=1&amp;q=90&amp;fit=max&quot;,&quot;full&quot;:&quot;https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-002.jpg?w=1440&amp;cbr=1&amp;q=90&amp;fit=max&quot;},&quot;src&quot;:&quot;https:\/\/hypebeast.com\/image\/2026\/05\/24\/grand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-002.jpg&quot;,&quot;alt&quot;:&quot;Grand Seiko Spring Drive U.F.A. Ushio 300 Diver Info SLGB023 Ushio Blue SLGB025 Ushio Green&quot;,&quot;width&quot;:1400,&quot;height&quot;:933,&quot;credit&quot;:&quot;Grand Seiko&quot;,&quot;caption&quot;:&quot;&quot;,&quot;creditKey&quot;:&quot;general&quot;,&quot;description&quot;:&quot;&quot;,&quot;annotations&quot;:null,&quot;shop&quot;:{&quot;url&quot;:null,&quot;label&quot;:&quot;Shop Now&quot;}}]\" role=\"list\">\n<div class=\"carousel-cell landscape\" data-gallery-index=\"1\" role=\"listitem\">\n<div class=\"carousel-cell-inner-wrapper\">\n<div class=\"carousel-cell-image-wrapper annotation-container fixed-ratio-3-2\">\n                                                                                                        <source data-srcset=\"https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-001.jpg?q=90&amp;w=1400&amp;cbr=1&amp;fit=max\" media=\"(min-width: 1260px)\" \/><\/div>\n<p><span class=\"gallery-image-index\"><span class=\"image-index \" aria-live=\"polite\">1 of 2<\/span><\/span><\/p>\n<div class=\"gallery-meta-container credit-wrapper\">\n<div class=\"credit general-general\">Grand Seiko<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"carousel-cell landscape\" data-gallery-index=\"2\" role=\"listitem\">\n<div class=\"carousel-cell-inner-wrapper\">\n<div class=\"carousel-cell-image-wrapper annotation-container fixed-ratio-3-2\">\n                                                                                                        <source data-srcset=\"https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-002.jpg?q=90&amp;w=1400&amp;cbr=1&amp;fit=max\" media=\"(min-width: 1260px)\" \/><\/div>\n<p><span class=\"gallery-image-index\"><span class=\"image-index \" aria-live=\"polite\">2 of 2<\/span><\/span><\/p>\n<div class=\"gallery-meta-container credit-wrapper\">\n<div class=\"credit \">Grand Seiko<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div id=\"post-body-top-bar\" class=\"post-body-top-bar d-block d-lg-none\">\n<div class=\"row\">\n<div class=\"post-body-top-bar-share-meta-container\">\n<div class=\"post-body-top-bar-meta\"><span class=\"post-body-top-bar-category\"><\/p>\n<p>    Watches<br \/>\n                                                    <\/span><span class=\"post-body-top-bar-published\"><time>Jun 4, 2026<\/time><\/span><\/div>\n<\/div>\n<div class=\"post-body-top-bar-hype-comments-container \"><span class=\"hype-count yellow\"><br \/>\n             14.1K<br \/>\n    <\/span><\/p>\n<div class=\"floating-tooltip\" role=\"tooltip\"><span>Views<\/span><\/div>\n<p><span class=\"disqus-comment-count\"><span>0<\/span><span>\u00a0<\/span><span class=\"d-none d-none text\">Comments<\/span><\/span><\/p>\n<div class=\"floating-tooltip\" role=\"tooltip\"><span>Comments<\/span><\/div>\n<p><span class=\"text\">Save<\/span><\/div>\n<\/div>\n<\/div>\n<div class=\"post-body-content\">\n<p>Following the groundbreaking unveiling of the Spring Drive Caliber 9RB2 at last year\u2019s Watches and Wonders Geneva, Grand Seiko has extended this pinnacle of precision into the Evolution 9 Collection.<\/p>\n<p>The introduction of the new Caliber 9RB1 movement marks a significant evolution, bringing ultra-precise mainspring-powered technology into a format designed for everyday versatility and enduring strength. Hand-assembled by highly skilled craftsmen and women at the Shinshu Watch Studio, the Caliber 9RB1 achieves its remarkable \u00b120 seconds per year accuracy through a meticulously vacuum-sealed crystal oscillator and an advanced low-power IC that minimizes the impact of external factors such as temperature, humidity, static electricity and light.<\/p>\n<p>This technical mastery is paired with a deeply poetic, nature-inspired aesthetic through the \u201cUshio\u201d design theme, which translates to \u201ctide\u201d in Japanese. Reflecting the waters that surround the Japanese archipelago \u2013 a timeless source of inspiration in Japan\u2019s culture and art \u2013 the timepieces beautifully balance technical innovation with organic design. The collection features two distinct gradient dial expressions that capture the moving currents of the sea. The blue dial reflects the vast expanse of the deep ocean as light streams through its depths, while the green dial draws from the tranquil beauty of shallow coastal waters near the shore. Both variations utilize meticulously crafted, multi-faceted indices and diamond-cut edges to deliver exceptional brilliance and legibility at a glance.\n<\/p>\n<div class=\"shortcode-slider before-booted full-screen-enabled light\" data-width=\"100%\" data-animate=\"slide\" data-slideshow data-loop data-slideshowspeed=\"7000\" data-group-cells=\"1\">\n<div class=\"flickity-carousel\">\n<div class=\"flickity-carousel-cell\" data-gallery-index=\"1\"><span class=\"gallery-image-index\"><span class=\"image-index\">1 of 6<\/span><\/span><\/p>\n<div class=\"wp-caption alignnone\">\n                                    <source srcset=\"https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-005.jpg?q=90&amp;w=2180&amp;format=jpeg&amp;cbr=1&amp;fit=max\" media=\"<br \/>\n                                        (min-width: 1200px) and (-webkit-min-device-pixel-ratio: 2),<br \/>\n                                        (min-width: 1200px) and (min-resolution: 192dpi)<br \/>\n                                    \" \/><\/p>\n<p class=\"wp-caption-text credit-wrapper\"><span class=\"credit\">Grand Seiko<\/span><\/p>\n<\/div>\n<\/div>\n<div class=\"flickity-carousel-cell\" data-gallery-index=\"2\"><span class=\"gallery-image-index\"><span class=\"image-index\">2 of 6<\/span><\/span><\/p>\n<div class=\"wp-caption alignnone\">\n                                    <source srcset=\"https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-004.jpg?q=90&amp;w=2180&amp;format=jpeg&amp;cbr=1&amp;fit=max\" media=\"<br \/>\n                                        (min-width: 1200px) and (-webkit-min-device-pixel-ratio: 2),<br \/>\n                                        (min-width: 1200px) and (min-resolution: 192dpi)<br \/>\n                                    \" \/><\/p>\n<p class=\"wp-caption-text credit-wrapper\"><span class=\"credit\">Grand Seiko<\/span><\/p>\n<\/div>\n<\/div>\n<div class=\"flickity-carousel-cell\" data-gallery-index=\"3\"><span class=\"gallery-image-index\"><span class=\"image-index\">3 of 6<\/span><\/span><\/p>\n<div class=\"wp-caption alignnone\">\n                                    <source srcset=\"https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-003.jpg?q=90&amp;w=2180&amp;format=jpeg&amp;cbr=1&amp;fit=max\" media=\"<br \/>\n                                        (min-width: 1200px) and (-webkit-min-device-pixel-ratio: 2),<br \/>\n                                        (min-width: 1200px) and (min-resolution: 192dpi)<br \/>\n                                    \" \/><\/p>\n<p class=\"wp-caption-text credit-wrapper\"><span class=\"credit\">Grand Seiko<\/span><\/p>\n<\/div>\n<\/div>\n<div class=\"flickity-carousel-cell\" data-gallery-index=\"4\"><span class=\"gallery-image-index\"><span class=\"image-index\">4 of 6<\/span><\/span><\/p>\n<div class=\"wp-caption alignnone\">\n                                    <source srcset=\"https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-006.jpg?q=90&amp;w=2180&amp;format=jpeg&amp;cbr=1&amp;fit=max\" media=\"<br \/>\n                                        (min-width: 1200px) and (-webkit-min-device-pixel-ratio: 2),<br \/>\n                                        (min-width: 1200px) and (min-resolution: 192dpi)<br \/>\n                                    \" \/><\/p>\n<p class=\"wp-caption-text credit-wrapper\"><span class=\"credit\">Grand Seiko<\/span><\/p>\n<\/div>\n<\/div>\n<div class=\"flickity-carousel-cell\" data-gallery-index=\"5\"><span class=\"gallery-image-index\"><span class=\"image-index\">5 of 6<\/span><\/span><\/p>\n<div class=\"wp-caption alignnone\">\n                                    <source srcset=\"https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-007.jpg?q=90&amp;w=2180&amp;format=jpeg&amp;cbr=1&amp;fit=max\" media=\"<br \/>\n                                        (min-width: 1200px) and (-webkit-min-device-pixel-ratio: 2),<br \/>\n                                        (min-width: 1200px) and (min-resolution: 192dpi)<br \/>\n                                    \" \/><\/p>\n<p class=\"wp-caption-text credit-wrapper\"><span class=\"credit\">Grand Seiko<\/span><\/p>\n<\/div>\n<\/div>\n<div class=\"flickity-carousel-cell\" data-gallery-index=\"6\"><span class=\"gallery-image-index\"><span class=\"image-index\">6 of 6<\/span><\/span><\/p>\n<div class=\"wp-caption alignnone\">\n                                    <source srcset=\"https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-008.jpg?q=90&amp;w=2180&amp;format=jpeg&amp;cbr=1&amp;fit=max\" media=\"<br \/>\n                                        (min-width: 1200px) and (-webkit-min-device-pixel-ratio: 2),<br \/>\n                                        (min-width: 1200px) and (min-resolution: 192dpi)<br \/>\n                                    \" \/><\/p>\n<p class=\"wp-caption-text credit-wrapper\"><span class=\"credit\">Grand Seiko<\/span><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p>While it\u2019s built as a\u00a0high-performance diving watch with 300 meters of water resistance, the implementation of the compact Caliber 9RB1 allowed Grand Seiko to craft its most wearable professional sports silhouette yet. Measuring just 40.8mm in diameter and 12.9mm in thickness, it is the smallest diver\u2019s watch in Grand Seiko\u2019s lineup, moving it away from purely utilitarian constraints and transforming it into a sophisticated accessory suitable for any occasion. The watch\u2019s profile features broad lugs designed to capture light across a wide surface, giving it a commanding wrist presence despite its compact dimensions. This refined architecture ensures that the watch easily transitions from formal settings to active environments, offering a comfortable fit for a wide range of wrist sizes.\n<\/p>\n<p>The physical refinement of the timepiece is further elevated by the choice of high-performance materials and functional innovations. Both the case and bracelet are sculpted from High-Intensity Titanium, a material that is roughly 30% lighter than traditional stainless steel and boasts a bright, lustrous tone. This provides an exceptional balance of scratch resistance, robustness, and lightweight comfort for daily wear.\n<\/p>\n<p>Furthermore, the watch introduces an evolved bracelet design featuring a newly developed locking extension clasp with a sophisticated micro-adjustment system. This mechanism allows for up to 6mm of fine-tuning across a three-step micro-adjustment alongside an 18mm extension feature, while a secure GS emblem on the clasp functions as a locking mechanism to prevent accidental release. The result is a highly accurate, versatile masterpiece that seamlessly integrates ultimate precision into a modern, lifestyle-oriented format.\n<\/p>\n<p>Explore the new Spring Drive U.F.A. Ushio 300 Diver watches through Grand Seiko\u2019s official website and physical boutiques.<\/p>\n<div class=\"show-article\">\n<p>                                                            Read Full Article<\/p><\/div>\n<\/div>\n<footer>\n<div class=\"related-stories-main-wrapper\">\n<h3>Related Stories<\/h3>\n<div class=\"stories-container\" data-layer-list-name=\"related_stories\" data-layer-list-offset=\"0\" data-layer-list-child-selector=\".story-item\">\n<div class=\"story-item\" data-layer-item-id=\"6733526\" data-layer-item-blog-id=\"1\" data-layer-item-type=\"post\"><span>&gt;<\/span>Seiko Honors PADI\u2019s 60th Anniversary With a Limited-Edition Prospex Diver\n                                                                        <\/div>\n<div class=\"story-item\" data-layer-item-id=\"6733455\" data-layer-item-blog-id=\"1\" data-layer-item-type=\"post\"><span>&gt;<\/span>Formula 1 Signs 10-Year Contract Extension for the Las Vegas Grand Prix\n                                                                        <\/div>\n<div class=\"story-item\" data-layer-item-id=\"6733575\" data-layer-item-blog-id=\"1\" data-layer-item-type=\"post\"><span>&gt;<\/span>Supreme and La Martina Tap Jacob &amp; Co. for a Premium Spring 2026 Collection\n                                                                        <\/div>\n<\/div>\n<\/div>\n<div class=\"article-email-signup-wrapper impression-tracker\">\n<h3>We got you covered. Don\u2019t miss out on the latest news by signing up for our newsletters.<\/h3>\n<div class=\"terms\">By subscribing, you agree to our Terms of Use and Privacy Policy.<\/div>\n<\/div>\n<div class=\"post-body-author d-block d-lg-none\">\n<hr class=\"sidebar-divider share-divider\"><span class=\"presented-by\">Presented by<br \/>\n                            Grand Seiko<br \/>\n                    <\/span><\/div>\n<div class=\"post-body-share d-block d-lg-none\">\n<hr class=\"sidebar-divider\">\n<h6>Share this article<\/h6>\n<\/div>\n<div class=\"post-body-content-tags\">\n<div class=\"body collapsed\">\n<p>    Grand SeikoGrand Seiko Spring Drive\n                                                            <\/p><\/div>\n<\/div>\n<section class=\"post__body__author_info\">\n<div class=\"post__body__author_info__inner\"><img decoding=\"async\" src=\"https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F06%2F05%2Fzoe-300.jpg?w=100&amp;cbr=1&amp;q=90&amp;fit=max\" alt=\"Zoe Leung\" class=\"post__body__author_info__avatar\"><\/p>\n<div class=\"post__body__author_info__body\">\n<p>                    Zoe Leung<\/p>\n<p>                                    <span class=\"post__body__author_info__title\">Senior Editor<\/span><\/div>\n<\/div>\n<div class=\"post__body__author_info__bio_wrapper\">\n<p class=\"post__body__author_info__bio\">Zoe Leung is a Senior Editor at Hypebeast, where she has been shaping the publication\u2019s coverage of horology, art, design, and culture since 2023. Her extensive watch reporting spans exclusive manufacture visits with Maisons like Zenith, Jaeger-LeCoultre, and Grand Seiko, as well as insightful conversations with industry leaders and artisans. Beyond watches, she regularly spotlights international creatives and cultural phenomena, utilizing her knowledge of global music and entertainment subcultures to deliver narratives that explore the worldwide influence of contemporary visual storytelling and cross-cultural artistry.<\/p>\n<\/div>\n<\/section>\n<\/footer>\n<\/article>\n<\/div>\n<div class=\"post-body-sidebar-upper\">\n<div class=\"post-body-sidebar-category d-none d-lg-block\">\n<p>    Watches\n                                                                                                    <\/p><\/div>\n<div class=\"post-body-sidebar-published d-none d-lg-block\"><time>Jun 4, 2026<\/time><\/div>\n<ul class=\"post-body-sidebar-hype-comments-container list-unstyled d-none d-lg-block\">\n<li><span class=\"hype-count yellow\"><br \/>\n             14.1K<br \/>\n    <\/span><\/p>\n<div class=\"floating-tooltip\" role=\"tooltip\"><span>Views<\/span><\/div>\n<\/li>\n<li><span class=\"disqus-comment-count\"><span>0<\/span><span>\u00a0<\/span><span class=\"d-none d-sm-inline text\">Comments<\/span><\/span>\n<div class=\"floating-tooltip\" role=\"tooltip\"><span>Comments<\/span><\/div>\n<\/li>\n<li><span class=\"text\">Save<\/span><\/li>\n<\/ul>\n<div class=\"post-body-sidebar-author d-none d-lg-block\">\n<hr class=\"sidebar-divider share-divider\"><span class=\"presented-by\">Presented by<br \/>\n                            Grand Seiko<br \/>\n                    <\/span><\/div>\n<hr class=\"sidebar-divider d-none d-lg-block\">\n<div class=\"post-body-sidebar-share d-none d-lg-block\">\n<h6>Share this article<\/h6>\n<\/div>\n<\/div>\n<div class=\"post-body-sidebar-category d-none d-lg-block\">\n<p>    Watches\n                                                                                                    <\/p><\/div>\n<div class=\"post-body-sidebar-published d-none d-lg-block\"><time>Jun 4, 2026<\/time><\/div>\n<div class=\"post-body-sidebar-author d-none d-lg-block\">\n<hr class=\"sidebar-divider share-divider\"><span class=\"presented-by\">Presented by<br \/>\n                            Grand Seiko<br \/>\n                    <\/span><\/div>\n<div class=\"post-body-sidebar-share d-none d-lg-block\">\n<h6>Share this article<\/h6>\n<\/div>\n<article class=\"post-body-article\">\n<div class=\"post-gallery-container small inner-media\">\n<div class=\"gallery-container post-gallery-contain\" role=\"region\" aria-label=\"Built for the Ocean, Tailored for the Daily Grind: The Versatility of Grand Seiko\u2019s &quot;Ushio&quot;\">\n<div class=\"hb-gallery before-booted full-screen-enabled  \" data-images=\"[{&quot;image&quot;:{&quot;description&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;image_caption&quot;:null,&quot;small&quot;:&quot;https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-001.jpg?w=480&amp;cbr=1&amp;q=90&amp;fit=max&quot;,&quot;medium&quot;:&quot;https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-001.jpg?w=720&amp;cbr=1&amp;q=90&amp;fit=max&quot;,&quot;large&quot;:&quot;https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-001.jpg?w=1080&amp;cbr=1&amp;q=90&amp;fit=max&quot;,&quot;xlarge&quot;:&quot;https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-001.jpg?w=1440&amp;cbr=1&amp;q=90&amp;fit=max&quot;,&quot;full&quot;:&quot;https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-001.jpg?w=1440&amp;cbr=1&amp;q=90&amp;fit=max&quot;},&quot;src&quot;:&quot;https:\/\/hypebeast.com\/image\/2026\/05\/24\/grand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-001.jpg&quot;,&quot;alt&quot;:&quot;Grand Seiko Spring Drive U.F.A. Ushio 300 Diver Info SLGB023 Ushio Blue SLGB025 Ushio Green&quot;,&quot;width&quot;:1400,&quot;height&quot;:933,&quot;credit&quot;:&quot;Grand Seiko&quot;,&quot;caption&quot;:&quot;&quot;,&quot;creditKey&quot;:&quot;general&quot;,&quot;description&quot;:&quot;&quot;,&quot;annotations&quot;:null,&quot;shop&quot;:{&quot;url&quot;:null,&quot;label&quot;:&quot;Shop Now&quot;}},{&quot;image&quot;:{&quot;description&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;image_caption&quot;:null,&quot;small&quot;:&quot;https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-002.jpg?w=480&amp;cbr=1&amp;q=90&amp;fit=max&quot;,&quot;medium&quot;:&quot;https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-002.jpg?w=720&amp;cbr=1&amp;q=90&amp;fit=max&quot;,&quot;large&quot;:&quot;https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-002.jpg?w=1080&amp;cbr=1&amp;q=90&amp;fit=max&quot;,&quot;xlarge&quot;:&quot;https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-002.jpg?w=1440&amp;cbr=1&amp;q=90&amp;fit=max&quot;,&quot;full&quot;:&quot;https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-002.jpg?w=1440&amp;cbr=1&amp;q=90&amp;fit=max&quot;},&quot;src&quot;:&quot;https:\/\/hypebeast.com\/image\/2026\/05\/24\/grand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-002.jpg&quot;,&quot;alt&quot;:&quot;Grand Seiko Spring Drive U.F.A. Ushio 300 Diver Info SLGB023 Ushio Blue SLGB025 Ushio Green&quot;,&quot;width&quot;:1400,&quot;height&quot;:933,&quot;credit&quot;:&quot;Grand Seiko&quot;,&quot;caption&quot;:&quot;&quot;,&quot;creditKey&quot;:&quot;general&quot;,&quot;description&quot;:&quot;&quot;,&quot;annotations&quot;:null,&quot;shop&quot;:{&quot;url&quot;:null,&quot;label&quot;:&quot;Shop Now&quot;}}]\" role=\"list\">\n<div class=\"carousel-cell landscape\" data-gallery-index=\"1\" role=\"listitem\">\n<div class=\"carousel-cell-inner-wrapper\">\n<div class=\"carousel-cell-image-wrapper annotation-container fixed-ratio-3-2\">\n                                                                                                        <source data-srcset=\"https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-001.jpg?q=90&amp;w=1400&amp;cbr=1&amp;fit=max\" media=\"(min-width: 1260px)\" \/><\/div>\n<p><span class=\"gallery-image-index\"><span class=\"image-index \" aria-live=\"polite\">1 of 2<\/span><\/span><\/p>\n<div class=\"gallery-meta-container credit-wrapper\">\n<div class=\"credit general-general\">Grand Seiko<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"carousel-cell landscape\" data-gallery-index=\"2\" role=\"listitem\">\n<div class=\"carousel-cell-inner-wrapper\">\n<div class=\"carousel-cell-image-wrapper annotation-container fixed-ratio-3-2\">\n                                                                                                        <source data-srcset=\"https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-002.jpg?q=90&amp;w=1400&amp;cbr=1&amp;fit=max\" media=\"(min-width: 1260px)\" \/><\/div>\n<p><span class=\"gallery-image-index\"><span class=\"image-index \" aria-live=\"polite\">2 of 2<\/span><\/span><\/p>\n<div class=\"gallery-meta-container credit-wrapper\">\n<div class=\"credit \">Grand Seiko<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div id=\"post-body-top-bar\" class=\"post-body-top-bar d-block d-lg-none\">\n<div class=\"row\">\n<div class=\"post-body-top-bar-share-meta-container\">\n<div class=\"post-body-top-bar-meta\"><span class=\"post-body-top-bar-category\"><\/p>\n<p>    Watches<br \/>\n                                                    <\/span><span class=\"post-body-top-bar-published\"><time>Jun 4, 2026<\/time><\/span><\/div>\n<\/div>\n<div class=\"post-body-top-bar-hype-comments-container \"><span class=\"hype-count yellow\"><br \/>\n             14.1K<br \/>\n    <\/span><\/p>\n<div class=\"floating-tooltip\" role=\"tooltip\"><span>Views<\/span><\/div>\n<p><span class=\"disqus-comment-count\"><span>0<\/span><span>\u00a0<\/span><span class=\"d-none d-none text\">Comments<\/span><\/span><\/p>\n<div class=\"floating-tooltip\" role=\"tooltip\"><span>Comments<\/span><\/div>\n<p><span class=\"text\">Save<\/span><\/div>\n<\/div>\n<\/div>\n<div class=\"post-body-content\">\n<p>Following the groundbreaking unveiling of the Spring Drive Caliber 9RB2 at last year\u2019s Watches and Wonders Geneva, Grand Seiko has extended this pinnacle of precision into the Evolution 9 Collection.<\/p>\n<p>The introduction of the new Caliber 9RB1 movement marks a significant evolution, bringing ultra-precise mainspring-powered technology into a format designed for everyday versatility and enduring strength. Hand-assembled by highly skilled craftsmen and women at the Shinshu Watch Studio, the Caliber 9RB1 achieves its remarkable \u00b120 seconds per year accuracy through a meticulously vacuum-sealed crystal oscillator and an advanced low-power IC that minimizes the impact of external factors such as temperature, humidity, static electricity and light.<\/p>\n<p>This technical mastery is paired with a deeply poetic, nature-inspired aesthetic through the \u201cUshio\u201d design theme, which translates to \u201ctide\u201d in Japanese. Reflecting the waters that surround the Japanese archipelago \u2013 a timeless source of inspiration in Japan\u2019s culture and art \u2013 the timepieces beautifully balance technical innovation with organic design. The collection features two distinct gradient dial expressions that capture the moving currents of the sea. The blue dial reflects the vast expanse of the deep ocean as light streams through its depths, while the green dial draws from the tranquil beauty of shallow coastal waters near the shore. Both variations utilize meticulously crafted, multi-faceted indices and diamond-cut edges to deliver exceptional brilliance and legibility at a glance.\n<\/p>\n<div class=\"shortcode-slider before-booted full-screen-enabled light\" data-width=\"100%\" data-animate=\"slide\" data-slideshow data-loop data-slideshowspeed=\"7000\" data-group-cells=\"1\">\n<div class=\"flickity-carousel\">\n<div class=\"flickity-carousel-cell\" data-gallery-index=\"1\"><span class=\"gallery-image-index\"><span class=\"image-index\">1 of 6<\/span><\/span><\/p>\n<div class=\"wp-caption alignnone\">\n                                    <source srcset=\"https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-005.jpg?q=90&amp;w=2180&amp;format=jpeg&amp;cbr=1&amp;fit=max\" media=\"<br \/>\n                                        (min-width: 1200px) and (-webkit-min-device-pixel-ratio: 2),<br \/>\n                                        (min-width: 1200px) and (min-resolution: 192dpi)<br \/>\n                                    \" \/><\/p>\n<p class=\"wp-caption-text credit-wrapper\"><span class=\"credit\">Grand Seiko<\/span><\/p>\n<\/div>\n<\/div>\n<div class=\"flickity-carousel-cell\" data-gallery-index=\"2\"><span class=\"gallery-image-index\"><span class=\"image-index\">2 of 6<\/span><\/span><\/p>\n<div class=\"wp-caption alignnone\">\n                                    <source srcset=\"https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-004.jpg?q=90&amp;w=2180&amp;format=jpeg&amp;cbr=1&amp;fit=max\" media=\"<br \/>\n                                        (min-width: 1200px) and (-webkit-min-device-pixel-ratio: 2),<br \/>\n                                        (min-width: 1200px) and (min-resolution: 192dpi)<br \/>\n                                    \" \/><\/p>\n<p class=\"wp-caption-text credit-wrapper\"><span class=\"credit\">Grand Seiko<\/span><\/p>\n<\/div>\n<\/div>\n<div class=\"flickity-carousel-cell\" data-gallery-index=\"3\"><span class=\"gallery-image-index\"><span class=\"image-index\">3 of 6<\/span><\/span><\/p>\n<div class=\"wp-caption alignnone\">\n                                    <source srcset=\"https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-003.jpg?q=90&amp;w=2180&amp;format=jpeg&amp;cbr=1&amp;fit=max\" media=\"<br \/>\n                                        (min-width: 1200px) and (-webkit-min-device-pixel-ratio: 2),<br \/>\n                                        (min-width: 1200px) and (min-resolution: 192dpi)<br \/>\n                                    \" \/><\/p>\n<p class=\"wp-caption-text credit-wrapper\"><span class=\"credit\">Grand Seiko<\/span><\/p>\n<\/div>\n<\/div>\n<div class=\"flickity-carousel-cell\" data-gallery-index=\"4\"><span class=\"gallery-image-index\"><span class=\"image-index\">4 of 6<\/span><\/span><\/p>\n<div class=\"wp-caption alignnone\">\n                                    <source srcset=\"https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-006.jpg?q=90&amp;w=2180&amp;format=jpeg&amp;cbr=1&amp;fit=max\" media=\"<br \/>\n                                        (min-width: 1200px) and (-webkit-min-device-pixel-ratio: 2),<br \/>\n                                        (min-width: 1200px) and (min-resolution: 192dpi)<br \/>\n                                    \" \/><\/p>\n<p class=\"wp-caption-text credit-wrapper\"><span class=\"credit\">Grand Seiko<\/span><\/p>\n<\/div>\n<\/div>\n<div class=\"flickity-carousel-cell\" data-gallery-index=\"5\"><span class=\"gallery-image-index\"><span class=\"image-index\">5 of 6<\/span><\/span><\/p>\n<div class=\"wp-caption alignnone\">\n                                    <source srcset=\"https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-007.jpg?q=90&amp;w=2180&amp;format=jpeg&amp;cbr=1&amp;fit=max\" media=\"<br \/>\n                                        (min-width: 1200px) and (-webkit-min-device-pixel-ratio: 2),<br \/>\n                                        (min-width: 1200px) and (min-resolution: 192dpi)<br \/>\n                                    \" \/><\/p>\n<p class=\"wp-caption-text credit-wrapper\"><span class=\"credit\">Grand Seiko<\/span><\/p>\n<\/div>\n<\/div>\n<div class=\"flickity-carousel-cell\" data-gallery-index=\"6\"><span class=\"gallery-image-index\"><span class=\"image-index\">6 of 6<\/span><\/span><\/p>\n<div class=\"wp-caption alignnone\">\n                                    <source srcset=\"https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-008.jpg?q=90&amp;w=2180&amp;format=jpeg&amp;cbr=1&amp;fit=max\" media=\"<br \/>\n                                        (min-width: 1200px) and (-webkit-min-device-pixel-ratio: 2),<br \/>\n                                        (min-width: 1200px) and (min-resolution: 192dpi)<br \/>\n                                    \" \/><\/p>\n<p class=\"wp-caption-text credit-wrapper\"><span class=\"credit\">Grand Seiko<\/span><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p>While it\u2019s built as a\u00a0high-performance diving watch with 300 meters of water resistance, the implementation of the compact Caliber 9RB1 allowed Grand Seiko to craft its most wearable professional sports silhouette yet. Measuring just 40.8mm in diameter and 12.9mm in thickness, it is the smallest diver\u2019s watch in Grand Seiko\u2019s lineup, moving it away from purely utilitarian constraints and transforming it into a sophisticated accessory suitable for any occasion. The watch\u2019s profile features broad lugs designed to capture light across a wide surface, giving it a commanding wrist presence despite its compact dimensions. This refined architecture ensures that the watch easily transitions from formal settings to active environments, offering a comfortable fit for a wide range of wrist sizes.\n<\/p>\n<p>The physical refinement of the timepiece is further elevated by the choice of high-performance materials and functional innovations. Both the case and bracelet are sculpted from High-Intensity Titanium, a material that is roughly 30% lighter than traditional stainless steel and boasts a bright, lustrous tone. This provides an exceptional balance of scratch resistance, robustness, and lightweight comfort for daily wear.\n<\/p>\n<p>Furthermore, the watch introduces an evolved bracelet design featuring a newly developed locking extension clasp with a sophisticated micro-adjustment system. This mechanism allows for up to 6mm of fine-tuning across a three-step micro-adjustment alongside an 18mm extension feature, while a secure GS emblem on the clasp functions as a locking mechanism to prevent accidental release. The result is a highly accurate, versatile masterpiece that seamlessly integrates ultimate precision into a modern, lifestyle-oriented format.\n<\/p>\n<p>Explore the new Spring Drive U.F.A. Ushio 300 Diver watches through Grand Seiko\u2019s official website and physical boutiques.<\/p>\n<div class=\"show-article\">\n<p>                                                            Read Full Article<\/p><\/div>\n<\/div>\n<footer>\n<div class=\"related-stories-main-wrapper\">\n<h3>Related Stories<\/h3>\n<div class=\"stories-container\" data-layer-list-name=\"related_stories\" data-layer-list-offset=\"0\" data-layer-list-child-selector=\".story-item\">\n<div class=\"story-item\" data-layer-item-id=\"6733526\" data-layer-item-blog-id=\"1\" data-layer-item-type=\"post\"><span>&gt;<\/span>Seiko Honors PADI\u2019s 60th Anniversary With a Limited-Edition Prospex Diver\n                                                                        <\/div>\n<div class=\"story-item\" data-layer-item-id=\"6733455\" data-layer-item-blog-id=\"1\" data-layer-item-type=\"post\"><span>&gt;<\/span>Formula 1 Signs 10-Year Contract Extension for the Las Vegas Grand Prix\n                                                                        <\/div>\n<div class=\"story-item\" data-layer-item-id=\"6733575\" data-layer-item-blog-id=\"1\" data-layer-item-type=\"post\"><span>&gt;<\/span>Supreme and La Martina Tap Jacob &amp; Co. for a Premium Spring 2026 Collection\n                                                                        <\/div>\n<\/div>\n<\/div>\n<div class=\"article-email-signup-wrapper impression-tracker\">\n<h3>We got you covered. Don\u2019t miss out on the latest news by signing up for our newsletters.<\/h3>\n<div class=\"terms\">By subscribing, you agree to our Terms of Use and Privacy Policy.<\/div>\n<\/div>\n<div class=\"post-body-author d-block d-lg-none\">\n<hr class=\"sidebar-divider share-divider\"><span class=\"presented-by\">Presented by<br \/>\n                            Grand Seiko<br \/>\n                    <\/span><\/div>\n<div class=\"post-body-share d-block d-lg-none\">\n<hr class=\"sidebar-divider\">\n<h6>Share this article<\/h6>\n<\/div>\n<div class=\"post-body-content-tags\">\n<div class=\"body collapsed\">\n<p>    Grand SeikoGrand Seiko Spring Drive\n                                                            <\/p><\/div>\n<\/div>\n<section class=\"post__body__author_info\">\n<div class=\"post__body__author_info__inner\"><img decoding=\"async\" src=\"https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F06%2F05%2Fzoe-300.jpg?w=100&amp;cbr=1&amp;q=90&amp;fit=max\" alt=\"Zoe Leung\" class=\"post__body__author_info__avatar\"><\/p>\n<div class=\"post__body__author_info__body\">\n<p>                    Zoe Leung<\/p>\n<p>                                    <span class=\"post__body__author_info__title\">Senior Editor<\/span><\/div>\n<\/div>\n<div class=\"post__body__author_info__bio_wrapper\">\n<p class=\"post__body__author_info__bio\">Zoe Leung is a Senior Editor at Hypebeast, where she has been shaping the publication\u2019s coverage of horology, art, design, and culture since 2023. Her extensive watch reporting spans exclusive manufacture visits with Maisons like Zenith, Jaeger-LeCoultre, and Grand Seiko, as well as insightful conversations with industry leaders and artisans. Beyond watches, she regularly spotlights international creatives and cultural phenomena, utilizing her knowledge of global music and entertainment subcultures to deliver narratives that explore the worldwide influence of contemporary visual storytelling and cross-cultural artistry.<\/p>\n<\/div>\n<\/section>\n<\/footer>\n<\/article>\n<div id=\"post-body-top-bar\" class=\"post-body-top-bar d-block d-lg-none\">\n<div class=\"row\">\n<div class=\"post-body-top-bar-share-meta-container\">\n<div class=\"post-body-top-bar-meta\"><span class=\"post-body-top-bar-category\"><\/p>\n<p>    Watches<br \/>\n                                                    <\/span><span class=\"post-body-top-bar-published\"><time>Jun 4, 2026<\/time><\/span><\/div>\n<\/div>\n<div class=\"post-body-top-bar-hype-comments-container \"><span class=\"hype-count yellow\"><br \/>\n             14.1K<br \/>\n    <\/span><\/p>\n<div class=\"floating-tooltip\" role=\"tooltip\"><span>Views<\/span><\/div>\n<p><span class=\"disqus-comment-count\"><span>0<\/span><span>\u00a0<\/span><span class=\"d-none d-none text\">Comments<\/span><\/span><\/p>\n<div class=\"floating-tooltip\" role=\"tooltip\"><span>Comments<\/span><\/div>\n<p><span class=\"text\">Save<\/span><\/div>\n<\/div>\n<\/div>\n<div class=\"post-body-top-bar-share-meta-container\">\n<div class=\"post-body-top-bar-meta\"><span class=\"post-body-top-bar-category\"><\/p>\n<p>    Watches<br \/>\n                                                    <\/span><span class=\"post-body-top-bar-published\"><time>Jun 4, 2026<\/time><\/span><\/div>\n<\/div>\n<div class=\"post-body-top-bar-meta\"><span class=\"post-body-top-bar-category\"><\/p>\n<p>    Watches<br \/>\n                                                    <\/span><span class=\"post-body-top-bar-published\"><time>Jun 4, 2026<\/time><\/span><\/div>\n<div class=\"post-body-top-bar-hype-comments-container \"><span class=\"hype-count yellow\"><br \/>\n             14.1K<br \/>\n    <\/span><\/p>\n<div class=\"floating-tooltip\" role=\"tooltip\"><span>Views<\/span><\/div>\n<p><span class=\"disqus-comment-count\"><span>0<\/span><span>\u00a0<\/span><span class=\"d-none d-none text\">Comments<\/span><\/span><\/p>\n<div class=\"floating-tooltip\" role=\"tooltip\"><span>Comments<\/span><\/div>\n<p><span class=\"text\">Save<\/span><\/div>\n<div class=\"post-body-content\">\n<p>Following the groundbreaking unveiling of the Spring Drive Caliber 9RB2 at last year\u2019s Watches and Wonders Geneva, Grand Seiko has extended this pinnacle of precision into the Evolution 9 Collection.<\/p>\n<p>The introduction of the new Caliber 9RB1 movement marks a significant evolution, bringing ultra-precise mainspring-powered technology into a format designed for everyday versatility and enduring strength. Hand-assembled by highly skilled craftsmen and women at the Shinshu Watch Studio, the Caliber 9RB1 achieves its remarkable \u00b120 seconds per year accuracy through a meticulously vacuum-sealed crystal oscillator and an advanced low-power IC that minimizes the impact of external factors such as temperature, humidity, static electricity and light.<\/p>\n<p>This technical mastery is paired with a deeply poetic, nature-inspired aesthetic through the \u201cUshio\u201d design theme, which translates to \u201ctide\u201d in Japanese. Reflecting the waters that surround the Japanese archipelago \u2013 a timeless source of inspiration in Japan\u2019s culture and art \u2013 the timepieces beautifully balance technical innovation with organic design. The collection features two distinct gradient dial expressions that capture the moving currents of the sea. The blue dial reflects the vast expanse of the deep ocean as light streams through its depths, while the green dial draws from the tranquil beauty of shallow coastal waters near the shore. Both variations utilize meticulously crafted, multi-faceted indices and diamond-cut edges to deliver exceptional brilliance and legibility at a glance.\n<\/p>\n<div class=\"shortcode-slider before-booted full-screen-enabled light\" data-width=\"100%\" data-animate=\"slide\" data-slideshow data-loop data-slideshowspeed=\"7000\" data-group-cells=\"1\">\n<div class=\"flickity-carousel\">\n<div class=\"flickity-carousel-cell\" data-gallery-index=\"1\"><span class=\"gallery-image-index\"><span class=\"image-index\">1 of 6<\/span><\/span><\/p>\n<div class=\"wp-caption alignnone\">\n                                    <source srcset=\"https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-005.jpg?q=90&amp;w=2180&amp;format=jpeg&amp;cbr=1&amp;fit=max\" media=\"<br \/>\n                                        (min-width: 1200px) and (-webkit-min-device-pixel-ratio: 2),<br \/>\n                                        (min-width: 1200px) and (min-resolution: 192dpi)<br \/>\n                                    \" \/><\/p>\n<p class=\"wp-caption-text credit-wrapper\"><span class=\"credit\">Grand Seiko<\/span><\/p>\n<\/div>\n<\/div>\n<div class=\"flickity-carousel-cell\" data-gallery-index=\"2\"><span class=\"gallery-image-index\"><span class=\"image-index\">2 of 6<\/span><\/span><\/p>\n<div class=\"wp-caption alignnone\">\n                                    <source srcset=\"https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-004.jpg?q=90&amp;w=2180&amp;format=jpeg&amp;cbr=1&amp;fit=max\" media=\"<br \/>\n                                        (min-width: 1200px) and (-webkit-min-device-pixel-ratio: 2),<br \/>\n                                        (min-width: 1200px) and (min-resolution: 192dpi)<br \/>\n                                    \" \/><\/p>\n<p class=\"wp-caption-text credit-wrapper\"><span class=\"credit\">Grand Seiko<\/span><\/p>\n<\/div>\n<\/div>\n<div class=\"flickity-carousel-cell\" data-gallery-index=\"3\"><span class=\"gallery-image-index\"><span class=\"image-index\">3 of 6<\/span><\/span><\/p>\n<div class=\"wp-caption alignnone\">\n                                    <source srcset=\"https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-003.jpg?q=90&amp;w=2180&amp;format=jpeg&amp;cbr=1&amp;fit=max\" media=\"<br \/>\n                                        (min-width: 1200px) and (-webkit-min-device-pixel-ratio: 2),<br \/>\n                                        (min-width: 1200px) and (min-resolution: 192dpi)<br \/>\n                                    \" \/><\/p>\n<p class=\"wp-caption-text credit-wrapper\"><span class=\"credit\">Grand Seiko<\/span><\/p>\n<\/div>\n<\/div>\n<div class=\"flickity-carousel-cell\" data-gallery-index=\"4\"><span class=\"gallery-image-index\"><span class=\"image-index\">4 of 6<\/span><\/span><\/p>\n<div class=\"wp-caption alignnone\">\n                                    <source srcset=\"https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-006.jpg?q=90&amp;w=2180&amp;format=jpeg&amp;cbr=1&amp;fit=max\" media=\"<br \/>\n                                        (min-width: 1200px) and (-webkit-min-device-pixel-ratio: 2),<br \/>\n                                        (min-width: 1200px) and (min-resolution: 192dpi)<br \/>\n                                    \" \/><\/p>\n<p class=\"wp-caption-text credit-wrapper\"><span class=\"credit\">Grand Seiko<\/span><\/p>\n<\/div>\n<\/div>\n<div class=\"flickity-carousel-cell\" data-gallery-index=\"5\"><span class=\"gallery-image-index\"><span class=\"image-index\">5 of 6<\/span><\/span><\/p>\n<div class=\"wp-caption alignnone\">\n                                    <source srcset=\"https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-007.jpg?q=90&amp;w=2180&amp;format=jpeg&amp;cbr=1&amp;fit=max\" media=\"<br \/>\n                                        (min-width: 1200px) and (-webkit-min-device-pixel-ratio: 2),<br \/>\n                                        (min-width: 1200px) and (min-resolution: 192dpi)<br \/>\n                                    \" \/><\/p>\n<p class=\"wp-caption-text credit-wrapper\"><span class=\"credit\">Grand Seiko<\/span><\/p>\n<\/div>\n<\/div>\n<div class=\"flickity-carousel-cell\" data-gallery-index=\"6\"><span class=\"gallery-image-index\"><span class=\"image-index\">6 of 6<\/span><\/span><\/p>\n<div class=\"wp-caption alignnone\">\n                                    <source srcset=\"https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-008.jpg?q=90&amp;w=2180&amp;format=jpeg&amp;cbr=1&amp;fit=max\" media=\"<br \/>\n                                        (min-width: 1200px) and (-webkit-min-device-pixel-ratio: 2),<br \/>\n                                        (min-width: 1200px) and (min-resolution: 192dpi)<br \/>\n                                    \" \/><\/p>\n<p class=\"wp-caption-text credit-wrapper\"><span class=\"credit\">Grand Seiko<\/span><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p>While it\u2019s built as a\u00a0high-performance diving watch with 300 meters of water resistance, the implementation of the compact Caliber 9RB1 allowed Grand Seiko to craft its most wearable professional sports silhouette yet. Measuring just 40.8mm in diameter and 12.9mm in thickness, it is the smallest diver\u2019s watch in Grand Seiko\u2019s lineup, moving it away from purely utilitarian constraints and transforming it into a sophisticated accessory suitable for any occasion. The watch\u2019s profile features broad lugs designed to capture light across a wide surface, giving it a commanding wrist presence despite its compact dimensions. This refined architecture ensures that the watch easily transitions from formal settings to active environments, offering a comfortable fit for a wide range of wrist sizes.\n<\/p>\n<p>The physical refinement of the timepiece is further elevated by the choice of high-performance materials and functional innovations. Both the case and bracelet are sculpted from High-Intensity Titanium, a material that is roughly 30% lighter than traditional stainless steel and boasts a bright, lustrous tone. This provides an exceptional balance of scratch resistance, robustness, and lightweight comfort for daily wear.\n<\/p>\n<p>Furthermore, the watch introduces an evolved bracelet design featuring a newly developed locking extension clasp with a sophisticated micro-adjustment system. This mechanism allows for up to 6mm of fine-tuning across a three-step micro-adjustment alongside an 18mm extension feature, while a secure GS emblem on the clasp functions as a locking mechanism to prevent accidental release. The result is a highly accurate, versatile masterpiece that seamlessly integrates ultimate precision into a modern, lifestyle-oriented format.\n<\/p>\n<p>Explore the new Spring Drive U.F.A. Ushio 300 Diver watches through Grand Seiko\u2019s official website and physical boutiques.<\/p>\n<div class=\"show-article\">\n<p>                                                            Read Full Article<\/p><\/div>\n<\/div>\n<div class=\"post-body-author d-block d-lg-none\">\n<hr class=\"sidebar-divider share-divider\"><span class=\"presented-by\">Presented by<br \/>\n                            Grand Seiko<br \/>\n                    <\/span><\/div>\n<div class=\"post-body-share d-block d-lg-none\">\n<hr class=\"sidebar-divider\">\n<h6>Share this article<\/h6>\n<\/div>\n<div class=\"post-body-content-tags\">\n<div class=\"body collapsed\">\n<p>    Grand SeikoGrand Seiko Spring Drive\n                                                            <\/p><\/div>\n<\/div>\n<p>[analyse_source url=&#8221;https:\/\/hypebeast.com\/2026\/6\/grand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green&#8221;]<\/p>\n","protected":false},"excerpt":{"rendered":"<p>[analyse_image type=&#8221;featured&#8221; src=&#8221;https:\/\/image-cdn.hypb.st\/https%3A%2F%2Fhypebeast.com%2Fimage%2F2026%2F05%2F24%2Fgrand-seiko-spring-drive-u-f-a-ushio-300-diver-watches-slgb023-ushio-blue-slgb025-ushio-green-tw.jpg?w=1080&amp;cbr=1&amp;q=90&amp;fit=max&#8221;] Watches Jun 4, 2026 14.1K Views 0\u00a0Comments Comments Save Presented by Grand Seiko Share this article 1 of 2 Grand Seiko 2 of 2 Grand Seiko Watches Jun 4, 2026 14.1K Views 0\u00a0Comments Comments Save Following the groundbreaking unveiling of the Spring Drive Caliber 9RB2 at last year\u2019s Watches and Wonders Geneva, [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[226,39],"class_list":["post-1979444","post","type-post","status-publish","format-standard","hentry","category-politics","tag-crawlmanager","tag-hypebeast-com"],"_links":{"self":[{"href":"https:\/\/analyse.optim.biz\/index.php?rest_route=\/wp\/v2\/posts\/1979444","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/analyse.optim.biz\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/analyse.optim.biz\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/analyse.optim.biz\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/analyse.optim.biz\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1979444"}],"version-history":[{"count":0,"href":"https:\/\/analyse.optim.biz\/index.php?rest_route=\/wp\/v2\/posts\/1979444\/revisions"}],"wp:attachment":[{"href":"https:\/\/analyse.optim.biz\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1979444"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/analyse.optim.biz\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1979444"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/analyse.optim.biz\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1979444"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}