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Tissot 3121
Ligne: 11.5'''
Jewels: 17/21/25
Power Reserve: 44 hrs
Frequency: 18000 vph
Type: Automatic
Period used: 1942-
Diameter: 26.3 mm
Height: 5.85 mm
Hands: 1.50 x 0.90 x 0.20 mm
The Tissot 3121 is a mechanical watch movement that was produced starting in 1942. It is part of the first calibre family to feature bidirectional rotor winding. This movement can be equipped with an optional Reed's regulator. The specific differences between the 690, 691, 696, and 698 variants are not known. The Tissot 3121 movement has automatic winding capabilities, a sweep second hand, and has been used since 1942.
The Tissot 3121 features the following functions:
- Automatic Winding
- Sweep second
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.45 x 0.110 x 340 x 10.0 mm | GR3984X | Auto | Buy mainspring |
| 1.40 x 0.110 x 350 x 10.5 mm | Auto | 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
| Part Description | Reference # | Alternate | Buy |
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