Grand Seiko Ushio 300 SLGB023 COMING IN JULY! Eternity Ring that still shapes all Grand

that still shapes all Grand Seiko designs today

Equipped with Orbita long-lived lithium D cell batteries operating on the 8-minute winding cycle

Gemstone: Green Garnet

Made with 14k gold and emerald

Lume: LumiBrite on hands

Grand Seiko Ushio 300 SLGB023 COMING IN JULY! Eternity Ring that still shapes all GrandThe Ushio 300, a Spring Drive divers watch with phenomenal accuracy and a stunning blue 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