FEF 6721
Mechanical
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Dimensions
| Width | 13.05 lignes (29.44 mm) |
|---|---|
| Height | 1.7 mm |
| Stem height | 0.6 mm |
| Hands (H × M × S) | 1 × 0.55 × ? mm |
Technical data
| Beat rate | 28,800 vph (4 Hz) |
|---|---|
| Lift angle | 53 ° |
| Power reserve | 45 h |
| Jewels | — |
| Shock protection | — |
| Mobile stud carrier | No |
Complications
| Self winding | No |
|---|---|
| Date | No |
| Day | No |
| Hacking | No |
| Chronograph | No |
Mainspring
| GR code | GR4064-1 |
|---|---|
| Height | 1.5 mm |
| Thickness | 0.08 mm |
| Length | 180 mm |
| Barrel diameter | 6 mm |