Omega
Calibre 321
Manual-winding chronograph
Specifications
- Maker
- Omega
- Type
- Manual-winding chronograph
- In-house
- Yes
- Power reserve
- 55 h
- Frequency
- 18,000 vph (2.5 Hz)
Sources
- Official Omega retrieved October 14, 2026
Used in
| Watch | Ø | Thickness | Lug-to-lug |
|---|---|---|---|
| Omega Speedmaster Calibre 321 311.30.40.30.01.001 | 39.7 mm | 13.7 mm | 48 mm |