Seiko Alpinist SPB121 vs Seiko Spirit SARB033
Specifications
Marked rows differ| Case | ||
| Case diameter | 39.5 mm | 38 mm |
|---|---|---|
| Thickness | — | 11.2 mm |
| Lug-to-lug | — | 44 mm |
| Water resistance | 200 m | 100 m |
| Movement | ||
| Movement | automatic | Automatic (self-winding, hand-winding, hacking) |
| Caliber | 6R35 | 6R15 |
| Price | ||
| Launch MSRP | $725 | — |
| Details | ||
| Accuracy sec per day | — | +25/-15 |
| Beat rate vph | — | 21600 |
| Bracelet | — | Three-link stainless steel bracelet with folding clasp |
| Case material | — | 316L stainless steel |
| Caseback | — | Exhibition/display caseback |
| Crown | — | Non-screw-down |
| Crystal | sapphire | Sapphire (flat, front) |
| Dial color | — | Black |
| Jewels | — | 23 |
| Lug width mm | — | 20 |
| Lume | Lumibrite | Seiko Lumibrite on hands and indices |
| Mainspring | — | Spron 510 antimagnetic alloy |
| Market | — | Japanese Domestic Market (JDM), Seiko Spirit line |
| Power reserve hours | — | 50 |
| Production years | — | 2008–2018 |
Sources
Verified · 6 referencesEvery spec on this page was independently checked against the sources below before publishing.