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Seiko 4N21-5180
The Seiko 4N21-5180 is a mechanical movement watch that performs essential watch functions.
The Seiko 4N21-5180 features the following functions:
- Mechanical Movement
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.20 x 0.070 x 260 x 7.0 mm | GR2857 | 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 |
|---|---|---|---|
| BALANCE COMP, BREGUET RD STUD | 721/886 | 721/886 | Buy part |
| MAINSPRING 1.20-.07-260 7 | MS-414H | GR 2857 | Buy part |
| STAFF, COL .50 RIV .75 | 100/105 | Buy part | |
| STEM, TAP 10 | 200/95F | 401/FF 59 | Buy part |
| STEM, TAP 10 OVERSIZE | 200/908F | 401/FF 59 OVERSIZE | Buy part |
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