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Bettlach 8125
(EB)
Ligne: 11.5'''
Jewels: 17/25/39
Power Reserve: 40 hrs
Frequency: 21600 vph
Type: Automatic
Period used: ~1965
Diameter: 26 mm
Height: 5.0 mm
Hands: 1.50 x 0.90 x 0.21 mm
Base: Girard Perregaux 31
The Bettlach 8125 is an automatic watch movement with two roller freewheels and a ball-bearing rotor. It incorporates a regulation gear and is derived from the manual wind calibre AS 1687/1688. The development of the automatic mechanism involved collaboration between Doxa, Eberhard, Favre-Leuba, Girard-Perregaux, and Zodiac. Noteworthy features include shock protection and the presence of sweep seconds. This movement was employed around 1965; however, specific differences between the 31.19, 31.29, 31.4, and 31.9 variants are not disclosed.
The Bettlach 8125 features the following functions:
- Automatic Winding
- Shock Protection
- Sweep second
Balance Staff Listing
| Ronda Reference # | Shock System | Buy |
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Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.10 x 0.110 x 10.0 mm | Auto | Buy mainspring |
Incabloc Part Listing
| Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) | |
|---|---|---|---|
| See More |
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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