ETA 2510-404, Winding stem, split-inner female

• ETA original split-winding stem in factory packaging.
  

• 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.