{"product_id":"grand-seiko-evolution-9-collection-slgb025","title":"Grand Seiko Evolution 9 Collection SLGB025","description":"The “Ushio 300,” a Spring Drive diver’s watch with phenomenal accuracy and a stunning green dial. In 2025, Grand Seiko unveiled the Spring Drive Caliber 9RB2, a groundbreaking movement that received the then-new U.F.A. designation, standing for “Ultra Fine Accuracy.” Boasting an annual accuracy rate of ±20 seconds, Caliber 9RB2 earned the distinction of being the most accurate wristwatch movement powered by a mainspring.* This model is powered by Caliber 9RB1, featuring an improved construction that makes it ideal for sporting conditions while sharing the same attributes as the Caliber 9RB2.\nThe term ushio, which means “tide” in Japanese, evokes the waters that surround the Japanese archipelago. The green dial draws from the tranquil beauty of shallow coastal waters near the shore.\n* As of April 2026, based on Grand Seiko’s research.","brand":"Grand Seiko","offers":[{"title":"Default Title","offer_id":48004676321524,"sku":null,"price":12400.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0416\/5874\/4986\/files\/grand-seiko-evolution-9-collection-slgb025-slgb025-9820296.png?v=1776347774","url":"https:\/\/chpremier.com\/products\/grand-seiko-evolution-9-collection-slgb025","provider":"CH Premier Jewelers","version":"1.0","type":"link"}