Seiko
Grand Seiko Sport Spring Drive - SBGA231G
Grand Seiko Sport Spring Drive - SBGA231G
SKU:SBGA231G
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Reference Number: SBGA231G
A Spring Drive Powered Diver's WatchThis diver’s watch is powered by Grand Seiko’s unique Spring Drive caliber, which combines the motive force of a mainspring with the high precision of a quartz watch.
The case and band are made with high-intensity titanium, providing a scratch and corrosion resistant finish with a 137g weight reduction, making it 30% lighter than stainless steel and a pleasure to wear.
The watch is water resistant to a depth of 200 meters and utilizes LumiBrite for increased visibility of the hands and index. Designed for use in some of the most unforgiving environments, the rotating bezel is removable for simple maintenance while the area around the crown has been crafted to ensure that residue from dirt, sand, or seawater can be easily washed off.
With a mirror-finished case achieved through Zaratsu polishing, a lustrous rotating bezel, and multi-faceted cut indices, this watch is unmistakably Grand Seiko in its appearance, high specifications and durability.
TECHNICAL DETAILS
| Exterior | |
| Exterior | High-intensity titanium |
| Case back | Screw case back |
| Glass Material | Sapphire crystal |
| Glass Coating | Anti-reflective coating on inner surface |
| LumiBrite | Lumibrite on hands and index(es) |
| Case Size | Diameter 44.2mm Lug-to-lug 51.0mm Thickness 14.0mm |
| Band Width | 22mm |
| Clasp Type | Three-fold clasp with secure lock & push button release, solid & slide adjuster |
| Perimeter of Band | 196mm |
| Movement | |
| Calibre No. | 9R65 - Intructions |
| Movement Type | Spring Drive |
| Power reserve | Approx. 72 hours(3 days) |
| Accuracy | ±15 seconds per month (±1 second per day) |
| Functions | |
| Magnetic Resistance | 4,800 A/m |
| Weight | 137 g |
| Other Details / Features | Unidirectional rotating bezel Screw-down crown Three-fold clasp with secure lock and extender 30 jewels Power reserve indicator |
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