ETA 2381
Mechanical
Self-winding (rotor)
Date
No photos yet
Notes
indirectly driven minute allows a big balance and low profile
differences 2378, 2381 not known
assignment to different rotors unknown, e.g. single part (Fig.1) or separate sinter-metal weight (Fig.2)
Dimensions
| Width | 25.6 lignes (57.75 mm) |
|---|---|
| Height | 6.15 mm |
| Stem height | 1.55 mm |
| Hands (H × M × S) | 1.5 × 0.9 × 0.21 mm |
Technical data
| Beat rate | 18,000 vph (2.5 Hz) |
|---|---|
| Lift angle | — |
| Power reserve | — |
| Jewels | — |
| Shock protection | — |
| Mobile stud carrier | No |
Complications
| Self winding | Rotor |
|---|---|
| Date | Yes |
| Day | No |
| Hacking | No |
| Chronograph | No |
Mainspring
| GR code | Zf1244 |
|---|---|
| Height | 10.5 mm |
| Thickness | 0.11 mm |
| Length | 350 mm |
| Barrel diameter | 1.5 mm |