Helvetia 830-845

Helvetia inhouse movement with strange designed bridges? The movement has an extra train wheel to make space for a higher barrel and mainspring, the Helvetaia engineers was the first to think of this (and the last).

Technical data Helvetia cal: 830

• 17/21 jewels, manual wind, sweep second.
• Size: 11.5''' 25.60 mm.
• H: = 4.3 mm.
• N: = 18.000 A/h.
• Power reserve: 44 h.
• Mainspring: 1.40 x 10 - 012 - 290 mm.

Versions:

• 830: manual wind.
• 837: automatic.
• 838: automatic, redesigned from 837.
• 844: automatic, date.
• 845: automatic.