SLGB005

The pursuit of high accuracy has been the cornerstone of Grand Seiko’s values since its first watch was created in 1960. In the late 1970s, the development of Spring Drive began with the aim of harmoniously blending the traditional energy of a mainspring with state-of-the-art electronic watchmaking advancements. Inheriting this legacy of accuracy in watchmaking, Grand Seiko unveiled the Spring Drive Caliber 9RB2 at Watches and Wonders Geneva 2025. This groundbreaking movement receives the U.F.A. designation, which stands for “Ultra Fine Accuracy,” and boasts an astounding annual rate of ±20 seconds, making it the most accurate wristwatch movement powered by a mainspring today.

Now, Grand Seiko introduces a new Spring Drive U.F.A. creation in Ever-Brilliant Steel, a stainless-steel alloy renowned for its exceptional corrosion resistance and bright hue. It features a captivating new dial that expresses the breathtaking moment when dawn breaks over the frost-covered forests of the Shinshu region of central Japan, where all Grand Seiko Spring Drive watches are meticulously crafted. Limited edition of 1,300 pieces.