Zenith 120-401, Winding stem

• ZENITH original part, not in factory packaging.

• Fits cal: 120

• Thread: 0.90 mm.
  

Data: Zenith cal: 120

• 18 jewels, manual wind, center second.
• Size: 12''' 26,75 mm.
• H: = 4.65 mm.
• N: = 18.000 A/h.
• Power reserve: -- h.
• Mainspring: 1.55 X 11 - 0.105 - 430