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This Spring Drive creation’s impressive case embodies the Evolution 9 Style, a refinement of Grand Seiko’s unique design language, known as the Grand Seiko Style. SLGA009 captures the quiet mood of white birch forests near the Shinshu Watch Studio, home of Grand Seiko Spring Drive watchmaking. The timepiece is powered by the Spring Drive Calibre 9RA2, which features an innovative high-precision mechanism that compensates for variations in the oscillator’s performance by measuring the temperature 540 times per hour, and offers a power reserve of approximately 120 hours (about five days) when fully wound.
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| Case Material: | Stainless Steel |
|---|---|
| Glass Material: | Dual Curved Sapphire Glass with Anti-Reflective Coating on the Inside |
| Case size: |
Diameter: 40mm Thickness: 11.8 mm Length: 47.6mm |
| Case Colour: | Silver |
| Case Weight: | 176 |
| Band/Bracelet: | Bracelet - Stainless Steel |
| Band Colour: | Silver |
| Band Reference: | A01H117J0 |
| Dial Colour: | White |
| Hand Indicators: | Hour, Minute, Seconds |
| Calendar Indicators: | Date |
| Dial Markers: | Batons |
| Crown: | Screw Down |
| Calibre no.: | 9RA2 Instructions |
|---|---|
| Movement Type: | Spring Drive - Powered By The Movement of the Wearer |
| Accuracy: | ±0.5 second per day (±10 seconds per month) |
| Power Reserve: | 120 Hours Power Reserve |
| Display: | Analogue |
| Water Resistance: | 100 Metres |
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| Other details / Features: |
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Born in the pursuit of the ideal wristwatch, the Evolution 9 Collection evinces a new design grammar that evolved from the Grand Seiko Style of 1967. Through the new Evolution 9 Style, Grand Seiko forges a new path while honouring its origins.
This dial expresses the grandeur of white birch forests enveloped in crisp highland air. Nagano Prefecture, home to the Shinshu Watch Studio, boasts the largest concentration of white birch trees in Japan. White birch is a fast-growing, sun-loving tree with remarkable vitality. Its straight, white trunk reaching toward the sun conveys both beauty and strength. Inspired by the sight of countless birch trees spreading endlessly across the landscape, the dial features a delicate design that evokes the depth of these forests. It harmonizes with the silent motion of the tempered blue Spring Drive seconds hand and the serene stillness of white birch trees in the depths of winter.
This watch is powered by Grand Seiko’s Spring Drive Calibre 9RA2, a movement that maintains a level of performance comparable to that of the innovative Calibre 9RA5, which debuted in 2020. With Calibre 9RA2, the power reserve indicator is on the back to further slim down the watch’s profile. The see-through case back offers a view of the movement, whose “Shinshu Frost” decoration honours the frost that can be seen throughout the Shinshu region during periods of intense cold. This is complemented by the power reserve indicator hand, tempered to a beautiful shade of blue to communicate a peaceful expression.
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