Seiko Presage SSA391 vs Seiko Prospex Turtle SRP777
Specifications
Marked rows differ| Case | ||
| Case diameter | 42.4 mm | 44.3 mm |
|---|---|---|
| Thickness | 14.5 mm | 14 mm |
| Lug-to-lug | — | 48 mm |
| Water resistance | 100 m | 200 m |
| Movement | ||
| Movement | Automatic, hand-winding capable | Automatic (self-winding, with hand-winding and hacking seconds) |
| Caliber | 4R37 | Seiko 4R36 |
| Price | ||
| Launch MSRP | — | $475 |
| Details | ||
| Beat rate vph | — | 21600 |
| Bezel | — | Unidirectional rotating elapsed-timing bezel with luminous pip at 12:00 |
| Bezel clicks | — | 120 |
| Case material | — | Stainless steel |
| Crown | — | Screw-down offset crown |
| Crystal | — | Hardlex mineral |
| Day date display | — | Day-date at 3:00 (English/Spanish day wheel) |
| Dial color | — | Black |
| Discontinued | — | true |
| Jewels | — | 24 |
| Lug width mm | — | 22 |
| Lume | — | Seiko LumiBrite on hands and markers |
| Power reserve hours | — | 41 |
| Release year | — | 2016 |
| Strap | — | Silicone rubber dive strap, 22mm |
Sources
Verified · 18 referencesEvery spec on this page was independently checked against the sources below before publishing.