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Seiko 8221A
The Seiko 8221A watch movement features a timer function.
The Seiko 8221A features the following functions:
- Timer Function
Balance Staff Listing
| Ronda Reference # | Shock System | Buy |
|---|
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.90 x 0.190 x 500 x 15.5 mm | GR5644 | 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 |
|---|---|---|---|
| MAINSPRING | 10345/MS | Buy part | |
| MAINSPRING 1.90-.19-500 15,5 | MS-104X | GR 5644 | Buy part |
| STAFF, FINGER | 100/881 | Buy part | |
| STEM | 200/1153F | Buy part |
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