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Seiko 4N21-0670
Ligne: 5.25 x 8.5'''
The Seiko 4N21-0670 features the following functions:
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.15 x 0.090 x 220 x 7.0 mm | GR2795 | Manual | Buy mainspring |
| 1.10 x 0.080 x 240 x 7.0 mm | GR2579 | 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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