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Seiko 4N20-5480
The Seiko 4N20-5480 features the following functions:
Balance Staff Listing
| Ronda Reference # | Shock System | Buy |
|---|
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 2.15 x 0.140 x 480 x 13.0 mm | GR6134TR | TR | Buy mainspring |
| 2.10 x 0.150 x 480 x 15.0 mm | GR6025TR | TR | 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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