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Tissot 28.5-21
Ligne: 11.5'''
Jewels: 25
Power Reserve: 38 hrs
Frequency: 21600 vph
Type: Automatic
Period used: ~1975
Diameter: 26 mm
Hands: 1.50 x 0.90 x 0.21 mm
The Tissot 28.5-21 mechanical watch movement is a detached manual wind movement with an indirectly driven minute hand, allowing for a relatively large balance and a low profile. Specifically, the Type VS variant comes with a single-part 0.6mm higher rotor. This movement boasts a range of functions including automatic winding, sweep seconds, a separate day aperture, and quickset date by repeated pulling of the crown. It was commonly used around the period of 1975.
The Tissot 28.5-21 features the following functions:
- Automatic Winding
- Date: quickset by repeated pulling the crown
- Day and Date Display
- Day: separate aperture
- Sweep second
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.10 x 0.120 x 340 x 10.5 mm | GR2653X | Auto | Buy mainspring |
| 1.10 x 0.130 x 300 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) |
|---|
Documents
Parts Listing
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