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Tissot 31-21
Ligne: 11.5'''
Jewels: 17/21/25
Lift Angle: 52°
Power Reserve: 46 hrs
Frequency: 21600 vph
Type: Automatic
Period used: 1969-1978
Diameter: 26 mm
Height: 5.95 mm
Hands: 1.50 x 0.90 x 0.21 mm
The Tissot 31-21 watch movement, utilized from 1969 to 1978, features an indirectly driven minute mechanism that allows for a sizable balance and low profile. This automatic movement incorporates several functions: quickset day (available in 1 or 2 languages), quickset date, day and date display, and sweep seconds.
The Tissot 31-21 features the following functions:
- Automatic Winding
- Date (quickset)
- Day (quickset, 1 or 2 languages)
- Day and Date Display
- Sweep Seconds
Balance Staff Listing
| Ronda Reference # | Shock System | Buy |
|---|
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.45 x 0.115 x 360 x 13.5 mm | Auto | Buy mainspring | |
| 1.45 x 0.110 x 380 x 10.5 mm | GR3986X | Auto | Buy mainspring |
| 1.45 x 0.115 x 360 x 10.5 mm | GR39981X | Auto | Buy mainspring |
Incabloc Part Listing
| Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) | |
|---|---|---|---|
| See More |
Documents
Parts Listing
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