Zenith 135-401, Chronometre, Winding stem

• NOS Zenith original winding stem, not in factory packaging.
  Thread: 1.20 mm.
  

• Fits cal: 135 Chronometre

Data: Zenith cal: 135

• 19 jewels, manual wind, sub second.
• Size: 13''' 30.00 mm.
• H: = 5.00 mm.
• N: = 18000.
• Power reserve:
• Mainspring: 2.00 X 12 - 0.12 - 470