Seiko
Calibre VH31
Quartz
Specifications
- Maker
- Seiko
- Type
- Quartz
- In-house
- Not stated
- Power reserve
- Not found in sources
- Frequency
- Not found in sources
Sources
- Official Yema retrieved October 20, 2026
Maker's data sheet
Figures Seiko publishes for the bare movement. A watch brand may state a different power reserve for its own version.
- Movement diameter
- 23.7 mm (10½‴)
- Movement height
- 3.45 mm
- Official Time Module (Seiko Instruments) retrieved October 25, 2026
- Official Time Module (Seiko Instruments) retrieved October 25, 2026
Used in
| Watch | Ø | Thickness | Lug-to-lug |
|---|---|---|---|
| Yema Flygraf Pilot French Air Force 38.5 mm YMHF1593AA-CA | 38.5 mm | 8.9 mm | — |