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Seiko 4N21-0072
Ligne: 10.5'''
The Seiko 4N21-0072 watch movement incorporates a sweep seconds function.
The Seiko 4N21-0072 features the following functions:
- Sweep Seconds
Balance Staff Listing
| Ronda Reference # | Shock System | Buy |
|---|---|---|
| 3963 | Ordinary/None | Buy staff |
| 3626 | Ordinary/None | Buy staff |
| 3616 | Ordinary/None | Buy staff |
| 1736 | Ordinary/None | Buy staff |
| 4284 | Incabloc | Buy staff |
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 2.00 x 0.220 x 520 x 17.0 mm | GR5927 | Manual | Buy mainspring |
| 2.00 x 0.180 x 460 x 14.5 mm | GR5859 | Manual | Buy mainspring |
| 1.90 x 0.220 x 500 x 17.0 mm | GR5688 | Manual | Buy mainspring |
| 1.60 x 0.130 x 360 x 11.0 mm | GR4565 | Manual | Buy mainspring |
| 1.50 x 0.210 x 480 x 15.5 mm | GR4365 | 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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