Features:
Hours, minutes & seconds
NEW 9RB2 Spring Drive Movement
72 Hour Power Reserve Indicator on Movement Side
Date window
Screw Down Crown
NEW Micro Adjustable Clasp

Specifications:
Movement: Calibre 9RB2
Driving system: Spring Drive
Power Reserve: Approximately 72 hours
Accuracy: +/- 20 seconds per Year (+/2 3 seconds per month)
Water and magnetic resistance: 10 bar and 4800 A/m (60 gauss)

Case:
Material: Titanium
Diameter: 37mm x 11.4mm
Lug to Lug: 44.3mm
Caseback: Screw see-through case back 
Crystal: Sapphire crystal with anti-reflection coating on inner surface

Dial: 
Design: Ice Forest dial
Hands: Brush polished hour and minutes hand, blued steel seconds hand.
Markers: Brush polished markers (legible in low light from reflection)

Bracelet:
Titanium bracelet with three-fold clasp with push button release
Buckle: New Micro Adjustable Clasp

Warranty: 
Grand Seiko 5-Year International Warranty

Details:
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 an aim to harmoniously blend the traditional energy of a mainspring with state-of-the-art electronic watchmaking advancements. In 2004, Grand Seiko introduced the Spring Drive Caliber 9R65 with a monthly rate of ±15 seconds.

Today, this legacy of accuracy in watchmaking reaches new heights with the announcement of the Spring Drive Caliber 9RB2, which receives the new U.F.A. designation, standing for “Ultra Fine Accuracy.” The groundbreaking movement boasts a level of precision defined not by accuracy in seconds per day, week, or month, but by its accuracy over one year. The automatic U.F.A. movement has an astounding annual rate of ±20 seconds, making it the most accurate wristwatch movement powered by a mainspring today.*
*As of April 2025, based on Grand Seiko’s research.

In 2025, the Caliber 9RB2 makes its debut in the Evolution 9 Collection. To the east of the Shinshu Watch Studio lie the Kirigamine Highlands, where frost-covered trees can be observed during harsh winter months. The intricately textured dial captures the beauty of these ice forests thanks to finishing techniques that create pale blue tones that are subtle yet striking in their presence.

As an Authorized Retailer, all purchases are covered by the manufacturer’s warranty. Please review the full manufacturer Warranty & Services for terms and conditions.