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Seiko 7730-0020
The Seiko 7730-0020 watch movement is an automatic movement that features a sweep seconds hand. It operates at a beat rate of 28,800 vibrations per hour. The movement also includes 29 jewels.
The Seiko 7730-0020 features the following functions:
- Automatic Winding
- Sweep Seconds
Balance Staff Listing
| Ronda Reference # | Shock System | Buy |
|---|
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.31 x 0.071 x 360 x 7.8 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
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