FHF 73-4
Mechanical
Date
No photos yet
Notes
varying bridge shapes
differences not known between 73-4, 735-4
Dimensions
| Width | 25.6 lignes (57.75 mm) |
|---|---|
| Height | 4 mm |
| Stem height | 1.5 mm |
| Hands (H × M × S) | 1.3 × 0.9 × 0.21 mm |
Technical data
| Beat rate | 18,000 vph (2.5 Hz) |
|---|---|
| Lift angle | — |
| Power reserve | 42 h |
| Jewels | — |
| Shock protection | — |
| Mobile stud carrier | No |
Complications
| Self winding | No |
|---|---|
| Date | Yes |
| Day | No |
| Hacking | No |
| Chronograph | No |
Mainspring
| GR code | GR3729 |
|---|---|
| Height | 1.4 mm |
| Thickness | 0.12 mm |
| Length | 340 mm |
| Barrel diameter | 10.5 mm |