Evolution 9 Spring Drive U.F.A. Self-winding SLGB013
A Spring Drive U.F.A. watch inspired by the shimmering water of Lake Suwa.
Features
With its textured pattern, the blue dial expresses the surface of Lake Suwa. This tranquil body of water is located in an area near the place where Spring Drive watches are crafted, the Shinshu Watch Studio, which is housed in a Seiko Epson facility in the city of Shiojiri. The watch is equipped with the Spring Drive U.F.A. Caliber 9RB2, which delivers an extraordinary annual accuracy of ±20 seconds. It also features a power reserve of approximately 72 hours (about three days) when fully wound. Both the case and bracelet are made of Ever-Brilliant Steel, which shines whiter than conventional stainless steel while offering exceptional corrosion resistance.
Specifications
| Exterior: | Ever brilliant steel, Caseback: Ever brilliant steel and sapphire crystal |
|---|---|
| Case back: | See-through & Screw case back |
| Glass Material: | Box shaped sapphire crystal |
| Glass Coating: | Anti-reflective coating on inner surface |
| Case size: | Diameter 40.0mm Lug-to-lug 47.2mm Thickness 11.7mm |
| Band width: | 22mm |
| Clasp type: | Micro-adjustment clasp |
| Caliber no.: | 9RB2 Instructions |
|---|---|
| Movement Type: | Spring Drive |
| Power reserve: | Approx. 72 hours(3 days) |
| Accuracy: | ±20 seconds per year (±3 seconds per month) |
| Water resistance: | 10 bar |
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| Magnetic resistance: | 4,800 A/m |
| Other details / Features: |
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The essence of Grand Seiko is infused with Japanese beauty.
Born in the pursuit of the ideal wristwatch, the Evolution 9 Style evinces a new design grammar that evolved from the Grand Seiko Style of 1967. Through the Evolution 9 Style, Grand Seiko forges a new path while honoring its origins.
A dial inspired by Lake Suwa
The dial’s distinctive texture is inspired by the surface of Lake Suwa, located southeast of the Shinshu Watch Studio, where the watch is crafted. It depicts gentle ripples stirred by passing winds across the lake, capturing the shimmering glow of the early morning sun reflected on the water, and is rendered through a fine pattern enhanced by a radial finish. Combined with the smooth, gliding motion of the Spring Drive seconds hand, the design evokes the subtle passage of time felt in the stillness of the lakeside.
Caliber 9RB2
The pursuit of high accuracy has always been the cornerstone of Grand Seiko’s values. Receiving the new U.F.A. designation, which stands for “Ultra Fine Accuracy,” Caliber 9RB2 boasts a level of precision defined not by accuracy in seconds per day, week, or month, but by accuracy over one year. The movement has an exceptional annual rate of ±20 seconds, or approximately ±3 seconds per month.
Ever-Brilliant Steel with superior corrosion resistance
Known as Ever-Brilliant Steel due to its brilliant white hue, this special alloy is more resistant to corrosion than the stainless steels used in even the most prestigious watches today. It has a PREN (Pitting Resistance Equivalent Number) value 1.7 times higher than the grade of steel used in most high-end timepieces . PREN is a widely accepted standard used to measure corrosion resistance.
Three-step micro-adjustment clasp
The tapered bracelet features a three-step micro-adjustment clasp that operates without a tool, allowing a total of 6mm of fine adjustment in precise 2mm increments.
