Certina 29-0631
Data: Certina cal: 29-0631 (Valjoux 234).
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17 jewels, manual wind, 60s, 45 min chronograph, date. -
Size: 13''' 29,50 mm. -
H: = 6.47 mm. -
N: = 21.600 A/h. -
Power reserve: 48 h.
Versions:
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29-052: Hour counter (Valjoux 72). -
29-053: Date. -
29-062: (Valjoux 726). -
29-063: Date, same as 29-053, minor modifications. -
29-0631: Date, (Valjoux 234), minor modifications. -
29-064: (Valjoux 728).