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Return To ShopThe Felsa 4520 is an open face calibre watch movement that was primarily utilized around the period of 1930. It features a timer with a 60-second measurement capability with an accuracy of 0.2 seconds, along with a 30-minute measurement function, driven by a pillar wheel mechanism. Additionally, there is an optional setting available, which allows for timing intervals of 30 seconds (with 0.1-second accuracy) and 15 minutes. The movement is manually wound using a stem winding system. It includes a sweep second hand, as well as a sub minute indication.
The Felsa 4520 features the following functions:
Ronda Reference # | Shock System | Buy |
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4589 | Supershock | Buy staff |
4533 | Supershock | Buy staff |
4782 | Supershock | Buy staff |
Dimensions | GR Reference # | End Type | Buy |
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1.70 x 0.175 x 520 x 15.0 mm | GR5062 | Manual | Buy mainspring |
Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) |
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Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) |
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Part Description | Reference # | Alternate | Buy |
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