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Certina 304
Ligne: 17.5'''
Jewels: 15
Power Reserve: 34 hrs
Frequency: 18000 vph
Type: Manual Wind
Period used: ~1930
Diameter: 38.7 mm
Height: 5.05 mm
Hands: 1.75 x 1.10 / 0.22 mm
The Certina 304 watch movement features a hunter calibre with a Breguet hairspring. It is equipped with 1 or 2 train cocks. The movement offers stem winding and setting functionality, as well as a sub second feature. The movement was commonly used around the period of 1930.
The Certina 304 features the following functions:
- Stem wind and set
- Sub Second
Balance Staff Listing
| Ronda Reference # | Shock System | Buy |
|---|
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.80 x 0.180 x 450 x 15.0 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) |
|---|
Documents
Parts Listing
| Part Description | Reference # | Alternate | Buy |
|---|
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