Seiko Prospex Monster (4th Generation, SRPD27) SRPD27K1 vs Seiko Presage SRPA25 Blue Dial Automatic
Specifications
Marked rows differ| Case | ||
| Case diameter | 42.4 mm | 42 mm |
|---|---|---|
| Thickness | 13.4 mm | 13 mm |
| Lug-to-lug | 47.5 mm | — |
| Water resistance | 200 m | 100 m |
| Movement | ||
| Movement | Mechanical automatic (self-winding, with manual winding and hacking) | Automatic (self-winding, hand-windable, hacking) |
| Caliber | 4R36 | Seiko 4R35 |
| Price | ||
| Launch MSRP | $495 | — |
| Details | ||
| Beat rate vph | — | 21600 |
| Bezel | Unidirectional rotating, 120-click | — |
| Bracelet | — | Stainless steel bracelet with deployment clasp |
| Case material | Stainless steel | Stainless steel |
| Caseback | — | Exhibition (see-through) caseback |
| Crown | Screw-down | — |
| Crystal | Hardlex mineral crystal (with cyclops lens over the date) | Hardlex mineral |
| Date | — | Date at 3 o'clock |
| Day date | true | — |
| Dial color | Black | Blue, sunburst finish |
| Frequency vph | 21600 | — |
| Jewels | 24 | 23 |
| Lume | LumiBrite on hands and indices | None (no luminous coating on dial or hands) |
| Power reserve hours | 41 | 41 |
| Strap | Black silicone strap | — |
Sources
Verified · 11 referencesEvery spec on this page was independently checked against the sources below before publishing.