ZENITH 30.5-770, Mainspring

• ZENITH/OMEGA original minpring in factory sealed packaging.
  

• Fits Omega: 625

• Fits Zenith: 30.5
  

Manufactured from 1973 - 1979

Data ZENITH cal: 30.5  (OMEGA 625)

• 17 jewels, manual wind.
• Size: 17.5 mm.
• H: = 2.5 mm.
• N: = 21.600 A/h.
• Power reserve: 42 h.
• Mainspring: 1.00 x 6.5 - 0.075