Product Description
The Seiko Prospex SPB103J1 “Sumo” Diver combines robust construction with refined mechanical performance. With a sapphire crystal, 200m diving capability, extended clasp, and the long-lasting 6R35 movement offering a 70-hour power reserve, it delivers durability and precision for daily wear and underwater exploration.
| Case & Band | |
|---|---|
| SKU | SPB103J1 |
| Case Material | Stainless steel |
| Case Size |
Thickness: 12.9mm Diameter: 45.0mm Lug-to-lug: 52.6mm |
| Crystal | Sapphire crystal |
| LumiBrite | LumiBrite on hands, index(es) and bezel |
| Clasp |
Three-fold clasp with secure lock Push button release with extender |
| Distance Between Lugs | 20mm |
| Water Resistance | 200m / 660ft diver's |
| Weight | 188.0g |
| Movement & Specifications | |
|---|---|
| Caliber Number | 6R35 |
| Movement Type | Automatic with manual winding |
| Precision | +25 to −15 seconds per day |
| Power Reserve | Approx. 70 hours |
| Jewels | 24 |
| Functions |
Stop second hand function Date display |
| Features |
Unidirectional rotating bezel Screw-down crown Screw case back |
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