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New Grand Seiko Spring Drive UFA



Grand Seiko has expanded its Spring Drive UFA line with a new model, featuring the Caliber 9RB2, which debuted at this year's World Watch Working Group (WWG). This new model features a special stainless steel case and a deep purple textured dial.

This new release adds a stainless steel model to the acclaimed Grand Seiko Spring Drive UFA collection, which debuted at the 2025 Geneva Watches & Wonders exhibition. The UFA watches are part of the Evolution 9 collection and are equipped with the Caliber 9RB2. The debut models include the SLGB003 in a titanium case and bracelet, and the SLBG001 in a platinum case and alligator leather strap.

Aside from the case material and the new deep purple dial color, the models in the collection remain unchanged. The SLBG005 is made of Ever-Brilliant Steel, a special alloy created exclusively for Grand Seiko, while the aforementioned inaugural model was crafted from bright titanium and platinum. However, the case dimensions, case details, and bracelet remain unchanged.

Like the high-precision Caliber 9RB2, it boasts a maximum deviation of 20 seconds over a full year's operation. Although the Spring Drive movement draws on quartz circuitry, it is a fully mechanical movement and offers exceptional precision.

Since the launch of the first Grand Seiko watch in 1960, the pursuit of high precision has been a cornerstone of Grand Seiko's values. The development of the Sprint Drive in the late 1970s began by seamlessly merging traditional spring energy with cutting-edge electronic watchmaking technology.