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Bettlach 8121
(EB)
Ligne: 9.5'''
Jewels: 17/21/25
Power Reserve: 38 hrs
Frequency: 18000 vph
Type: Automatic
Period used: ~1950
Diameter: 21 mm
Height: 6.4 mm
Hands: 1.30 x 0.80 x 0.20 mm
The Bettlach 8121 watch movement is an automatic mechanical movement with a jewel-bearing rotor. It is part of a series that includes the 705, 705N, and 708, although the exact differences between these models are not known. The Bettlach 8121 movement features sub-second indication and was commonly used in watches produced around the 1950s.
The Bettlach 8121 features the following functions:
- Automatic Winding
- Sub Second
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.30 x 0.080 x 280 x 8.0 mm | GR3204X | Auto | Buy mainspring |
Incabloc Part Listing
| Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) |
|---|
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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