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Felsa 713
Ligne: 11.5'''
Jewels: 20
Power Reserve: 44 hrs
Frequency: 21600 vph
Type: Automatic
Period used: ~1975
Diameter: 26 mm
Hands: 1.50 x 0.90 x 0.21 mm
The Felsa 713 watch movement features a ball-bearing rotor and employs a sophisticated excenter self-winding mechanism with just one gear stage. This mechanism, known as "magic lever," was initially utilized in the first Otero automatics from the 1950s and later adopted into Seiko automatics in the 1970s. The automatic module is constructed with only two screws, securely holding all its parts together. While the specifications of the mainsprings used in the Otero 800 through 907 generation have been documented, the differences are not significant. The Felsa 713 movement offers various functions, including automatic winding, sweep seconds hand, day display, and quickset date. This movement was primarily used around 1975.
The Felsa 713 features the following functions:
- Automatic Winding
- Date: quickset
- Day
- Sweep second
Balance Staff Listing
| Ronda Reference # | Shock System | Buy |
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Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.20 x 0.100 x 9.5 mm | Auto | Buy mainspring |
Incabloc Part Listing
| Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) |
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KIF Part Listing
| Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) |
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Documents
Parts Listing
| Part Description | Reference # | Alternate | Buy |
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