Seiko Presage SSA391 vs Seiko Alpinist SARB017 (Green Dial)
Specifications
Marked rows differ| Case | ||
| Case diameter | 42.4 mm | 38 mm |
|---|---|---|
| Thickness | 14.5 mm | 12 mm |
| Water resistance | 100 m | 200 m |
| Movement | ||
| Movement | Automatic, hand-winding capable | Automatic (self-winding, with manual winding and hacking seconds) |
| Caliber | 4R37 | Seiko 6R15 |
| Details | ||
| Case material | — | Stainless steel (polished and brushed) |
| Compass bezel | — | Internal rotating compass ring operated by a second crown at 4 o'clock |
| Crystal | — | Curved sapphire (scratch resistant) |
| Dial color | — | Green sunburst |
| Frequency vph | — | 21600 |
| Hands | — | Gold-tone cathedral hands |
| Jewels | — | 23 |
| Lug width mm | — | 20 |
| Lume | — | Luminous-coated hands and markers |
| Power reserve hours | — | 50 |
| Production years | — | 2006–2018 |
| Strap | — | Brown leather with buckle closure |
Sources
Verified · 16 referencesEvery spec on this page was independently checked against the sources below before publishing.