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ETA 728
Ligne: 11.5'''
Jewels: 7/17
Power Reserve: 43 hrs
Frequency: 21600 vph
Type: Manual Wind
Period used: ~1970
Diameter: 26 mm
Hands: 1.50 x 0.90 x 0.21 mm
The ETA 728 is a mechanical watch movement characterized by its unique structure where the train and hand gear are driven separately by the barrel. This movement enables the watch to perform various functions including manual winding, sweep seconds, day, and date display. The date can be set by adjusting the time to the period between 21:40 and 24:00. The ETA 728 movement was produced around the 1970s.
The ETA 728 features the following functions:
- Date (set by changing 21:40-24h)
- Day
- Day and Date Display
- 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 0.130 x 300 x 9.5 mm | GR2988 | Manual | 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
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