A textured blue dial evokes a moonlit birch tree in this manual-winding, 10-beat mechanical timepiece
Features
This 10-beat, manual-winding mechanical watch is based on the “Evolution 9 Style,” a unique design grammar that takes the fusion of Grand Seiko’s spirit with the aesthetic sensibilities of Japan to a higher level. Its textured, navy-colored dial evokes the bark of a white birch tree illuminated by the moon. Featuring a slender stainless steel case that is a mere 9.95mm thick, the creation has an appearance worthy of a Grand Seiko dress watch. The bezel is refined, with a narrow profile that complements the lugs, whose clean lines are echoed on the dial by the indexes. The manual-winding movement is the Caliber 9SA4, which features a high number of vibrations, 10 per second, to maintain a stable level of accuracy, as well as a generous power reserve of up to 80 hours.
Specifications
| Exterior: | Stainless steel, Caseback: Stainless steel and sapphire crystal | 
|---|---|
| Case back: | See-through case back | 
| Case back with 4 screws | |
| Glass Material: | Box shaped sapphire crystal | 
| Glass Coating: | Anti-reflective coating on inner surface | 
| Case size: | Diameter 38.6mm Lug-to-lug 45.0mm Thickness 9.95mm | 
| Band width: | 20mm | 
| Band Material: | Cow leather | 
| Clasp type: | Three-fold clasp with push button release | 
| The perimeter of Band: | 195mm | 
| Caliber no.: | 9SA4 Instructions | 
|---|---|
| Movement Type: | Manual winding | 
| Power reserve: | Approx. 80 hours | 
| Mean daily rate: | 
                          +5 to -3 seconds per day
                            
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| Normal usage accuracy: | +8 to -1 seconds per day | 
| Water resistance: | Splash Resistant | 
|---|---|
| Magnetic resistance: | 4,800 A/m | 
| Weight: | 74 g | 
| Other details / Features: | 
                        
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