ETA 2510-401, Winding stem
- ETA original winding stem.
- Thread: 0.90 mm.
- Fits cal: 2510, 2512
Data ETA cal: 2512
- 17 jewels, manual wind.
- S: = 7.75''' 17.2 mm.
- H: = 2.85 mm.
- N: = 21.600 A/h.
- Power reserve: 44 h.
- Mainspring: 1.20 x 7,5 x 0,85 x 230 mm.
Versions:
- 2510: 18.000 A/h.
- 2512: 21.600 A/h, setting lever with screw.
- 2512-1: 21.600 A/h, setting lever with pin.