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Unitas 331
Ligne: 11.5'''
Jewels: 17/21
Lift Angle: 52°
Power Reserve: 51 hrs
Frequency: 18000 vph
Type: Manual Wind
Diameter: 26 mm
Height: 4.0 mm
Hands: 1.30 x 0.90 x 0.21 mm
The Unitas 331 watch movement features a manual winding mechanism, a sweep seconds function, and a calendar module. The date can be set by adjusting a 20:45-24h configuration. While details regarding the differences between the 671-4 and 675-4 are not available, variations may exist in bridge shapes.
The Unitas 331 features the following functions:
- Calendar
- Date: set by changing 20:45-24h
- Manual Winding
- Sweep second
Balance Staff Listing
| Ronda Reference # | Shock System | Buy |
|---|---|---|
| 4101 | Ordinary/None | Buy staff |
| 5450 | Incabloc | Buy staff |
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.40 x 0.100 x 315 x 9.5 mm | Manual | Buy mainspring | |
| 1.40 x 0.100 x 320 x 9.0 mm | GR3665 | Manual | Buy mainspring |
Incabloc Part Listing
| Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) |
|---|
KIF Part Listing
| Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) |
|---|
Documents
Parts Listing
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