Grand Seiko Heritage Watch SBGA437G
Shinshu, the region where all Grand Seiko Spring Drive watches are created, was once a major center of silk production. This classic design has a dial whose silken sunray pattern pays tribute to this heritage. The fine grain of the pattern radiates outwards and catches the light at every angle. It has a soft texture, as if it were the finest silk, which can only be created by the application of soft silver, using a special method of silver plating.
Exterior
| Exterior: | Stainless steel |
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| Case back: | Screw case back |
| Glass Material: | Dual-curved sapphire crystal |
| Glass Coating: | Anti-reflective coating on inner surface |
| Case size: | Diameter 40.0mm Lug-to-lug 46.6mm Thickness 12.3mm |
| Band width: | 20mm |
| Clasp type: | Three-fold clasp with push button release |
| The perimeter of Band: | 203mm |
Movement
| Caliber no.: | |
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| Movement Type: | Spring Drive |
| Power reserve: | Approx. 72 hours(3 days) |
| Accuracy: | ±15 seconds per month (±1 second per day) |
Functions
| Water resistance: | 10 bar |
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| Magnetic resistance: | 4,800 A/m |
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