Omega 681
Mechanical
c. 1961
Self-winding (rotor)
Date
No photos yet
Notes
1961-1971
shares many parts with manual-wind family 620
Dimensions
| Width | 17.5 lignes (39.48 mm) |
|---|---|
| Height | 5.3 mm |
| Stem height | 1.8 mm |
| Hands (H × M × S) | 1.1 × 0.55 × 0.16 mm |
Technical data
| Beat rate | 19,800 vph (2.75 Hz) |
|---|---|
| Lift angle | 48 ° |
| Power reserve | 40 h |
| Jewels | — |
| Shock protection | — |
| Mobile stud carrier | No |
Complications
| Self winding | Rotor |
|---|---|
| Date | Yes |
| Day | No |
| Hacking | No |
| Chronograph | No |
Mainspring
| GR code | GR2628-X |
|---|---|
| Height | 1.1 mm |
| Thickness | 0.11 mm |
| Length | 360 mm |
| Barrel diameter | 11 mm |