Grand Seiko
Calibre 9SA4
Manual winding
Specifications
- Maker
- Grand Seiko
- Type
- Manual winding
- In-house
- Yes
- Power reserve
- about 80 h
- Frequency
- 36,000 vph (5 Hz)
Sources
- Official Grand Seiko retrieved October 14, 2026
Used in
| Watch | Ø | Thickness | Lug-to-lug |
|---|---|---|---|
| Grand Seiko Evolution 9 SLGW003 SLGW003G | 38.6 mm | 10 mm | 45 mm |