Seiko Prospex Alpinist SPB155J1
Stainless steel 38mm case with 6R35 automatic movement.
Movement
| Caliber Number | 6R35 |
| Movement Type | Automatic with manual winding |
| Precision | +25 to -15 seconds per day |
| Power reserve | Approx. 70 hours |
| Jewels | 24 |
| Functions |
|
Case/Band
| Case Material | Stainless steel |
| Case Size |
|
| Crystal | Curved sapphire crystal |
| Crystal Coating | Anti-reflective coating on inner surface |
| LumiBrite | Lumibrite on hands and index(es) |
| Band Material | Calfskin |
| Clasp | Three-fold clasp with push button release |
| Distance between lugs | 20 |
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Other Details
Water Resistance 20 bar Weight 144.0g
Features - See-through case back
- Screw case back
- Screw-down crown