FEF 172
Mechanical
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Notes
differences not known between 170...173, 175, 176, 178...180
Dimensions
| Width | 18.5 lignes (41.73 mm) |
|---|---|
| Height | 3.55 mm |
| Stem height | — |
| Hands (H × M × S) | 1.3 × 0.6 × 0.2 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 | No |
| Day | No |
| Hacking | No |
| Chronograph | No |
Mainspring
| GR code | GR4100 |
|---|---|
| Height | 1.5 mm |
| Thickness | 0.09 mm |
| Length | 280 mm |
| Barrel diameter | 8 mm |