Seiko 5 Sports SRPD55 vs Seiko Alpinist SPB121
Specifications
Marked rows differ| Case | ||
| Case diameter | 42.5 mm | 39.5 mm |
|---|---|---|
| Thickness | 13.4 mm | — |
| Lug-to-lug | 46 mm | — |
| Water resistance | 100 m | 200 m |
| Movement | ||
| Movement | Automatic, hacking seconds, hand-winding | automatic |
| Caliber | 4R36 | 6R35 |
| Price | ||
| Launch MSRP | $350 | $725 |
| Details | ||
| Beat rate bph | 21600 | — |
| Bezel | Black unidirectional rotating aluminum bezel | — |
| Bracelet | Stainless steel three-fold clasp bracelet with push-button release, 22mm lug width | — |
| Crystal | Hardlex | sapphire |
| Dial color | Black | — |
| Jewels | 24 | — |
| Lume | LumiBrite hands and markers | Lumibrite |
| Magnetic resistance a per m | 4800 | — |
| Model name | 5 Sports SKX Sports Style | — |
| Power reserve hours | 41 | — |
| Weight g | 170 | — |
Sources
Verified · 9 referencesEvery spec on this page was independently checked against the sources below before publishing.