Grand Seiko Heritage LTD SBGR321G. Limited to 2500 pieces worldwide.
Exterior
| Glass Material : | Dual-curved sapphire crystal |
|---|---|
| Glass Coating : | Anti-reflective coating on inner surface |
| Case size : | Diameter 40mm × Thickness 13mm |
| Clasp type : | Three-fold clasp with push button release |
| Caliber no. : | |
|---|---|
| Movement Type : | Automatic with manual winding |
| Power reserve : | Approx. 72 hours(3 days) |
| Accuracy : | +5 to -3 seconds per day (when static) |