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Unitas 521
Ligne: 12'''
Jewels: 17
Lift Angle: 50°
Power Reserve: 47 hrs
Frequency: 21600 vph
Type: Manual Wind
Period used: ~1975
Diameter: 27.6 mm
Height: 4.65 mm
Hands: 1.50 x 0.90 x 0.25 mm
The Unitas 521 watch movement, utilized around 1975, features a manual wind function and a sweep second mechanism. It boasts a low-profile design with a large balance, made possible by an indirectly driven minute hand. Additionally, it incorporates a quickset date function, providing convenient adjustment capabilities.
The Unitas 521 features the following functions:
- Date: quickset
- Manual Winding
- Sweep second
Balance Staff Listing
| Ronda Reference # | Shock System | Buy |
|---|
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.15 x 0.105 x 10.8 mm | 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) |
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Documents
Parts Listing
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