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Grand Seiko Chronograph Spring Drive GMT ref. SBGC253G
| Exterior: | High intensity titanium |
|---|---|
| Backplate: | See-through & Screw case back |
| Glass material: | Double curved sapphire |
| Glass coating: | Anti-reflective coating on the inner surface |
| LumiBrite: | LumiBrite on hands, markers and bezel |
| Case size: | Diameter 44.5mm Lug-to-lug 50.0mm Thickness 16.8mm |
| Strap width: | 23mm |
| Bracelet length: | 198mm |
| Caliber code: | 9R86 Instructions |
|---|---|
| Power reserve: | Approximately 72 hours (3 days) |
| Accuracy: | ยฑ1 second per day / ยฑ15 seconds per month (average) |
| Water resistance: | 20 bar |
|---|---|
| Magnetic resistance: | 4.800 A/m |
| Other details/features: |
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