Seiko
Calibre 6L37
Automatic
Specifications
- Maker
- Seiko
- Type
- Automatic
- In-house
- Yes
- Power reserve
- about 45 h
- Frequency
- 28,800 vph (4 Hz)
Sources
- Official Seiko retrieved October 14, 2026
Used in
| Watch | Ø | Thickness | Lug-to-lug |
|---|---|---|---|
| Seiko Prospex Marinemaster 1965 Heritage Diver's SJE099J1 | 39.5 mm | 12.3 mm | 47.2 mm |