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ETA 871
Ligne: 11.5'''
Jewels: 17
Power Reserve: 48 hrs
Frequency: 18000 vph
Type: Manual Wind
Period used: ~1975
Diameter: 26 mm
Height: 3.6 mm
Hands: 1.40 x 0.90 x 0.21 mm
The ETA 871 watch movement features a unique design in which the train and hand gear are separately driven by the barrel. This design allows for a low profile and provides space for a large balance, although it requires high precision and shake-free gears due to the coupling between the second- and minute hands. The movement offers manual winding, sweep seconds, and a date function that can be set by changing the time from 19.40 to 24 hours. It was commonly used around 1975.
The ETA 871 features the following functions:
- Date: Set by changing 19.40-24h
- Manual Winding
- 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 0.110 x 320 x 10.0 mm | Manual | 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
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