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Seiko 1F21A
Ligne: 10.5'''
The Seiko 1F21A watch movement incorporates a sweep seconds function, allowing for precise and continuous measurement of time. Additionally, it features a calendar function, providing the display of date information.
The Seiko 1F21A features the following functions:
- Calendar
- Sweep Seconds
Balance Staff Listing
| Ronda Reference # | Shock System | Buy |
|---|
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.20 x 0.100 x 320 x 9.0 mm | GR2921 | 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 COMPLETE | 0310760 | 721/1466 | Buy part |
| MAINSPRING 1.20-.10-320 9 | MS-311N | GR 2921 | Buy part |
| PALLET ARBOR | 72S/55P | 714/ETA 345 | Buy part |
| ROLLER | 82S/330R | Buy part | |
| SET BRIDGE | 445/931 | Buy part | |
| STAFF | 0315760 | 100/2375 | Buy part |
| STEM, SPLIT | 360/358 | Buy part | |
| STEM, TAP 10 | 200/1536F | Buy part |
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