The Spring Drive U.F.A.
movement with an astounding annual rate makes its debut in a creation inspired by the beauty of ice forests.
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.
The intricately textured dial captures the beauty of the Kirigamine Highlands ice forests seen through crisp, clear air, thanks to finishing techniques that create silver-tinged blue hues, and is beautifully accented by a tempered blue seconds hand.
Thanks to the movement’s compact design, the new watches have a case diameter of just 37mm, making them the smallest models powered by the 9R series to date and ideal for smaller wrists.
Moreover, it features a newly developed three-step micro-adjustment clasp that operates without a tool, allowing precise adjustments in 2mm increments for enhanced comfort.
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