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Seiko 1421-5730
The Seiko 1421-5730 is a chronograph movement primarily designed for use in ladies watches. It is notable for its smaller diameter when compared to other movements such as the 2894. The movement includes a date function.
The Seiko 1421-5730 features the following functions:
Balance Staff Listing
| Ronda Reference # | Shock System | Buy |
|---|
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|
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 |
|---|---|---|---|
| AUTOMATIC BRIDGE, LOWER | A/9411 | 1141/ETA 2000 | Buy part |
| BALANCE COMPLETE, SCREWLESS | 721/2235 | 721/ETA 2000-1 | Buy part |
| FOURTH WHEEL | 220/1020 | 220/ETA 2094 | Buy part |
| INTERMEDIATE SET WHEEL | 450/1379 | 453/ETA 2094 | Buy part |
| MAINSPRING | 770/289 | 2010200 | Buy part |
| PALLET BRIDGE | M/5130 | 125/ETA 2000-1 | Buy part |
| RATCHET WHEEL | 415/1375 | 415/ETA 2000-1 | Buy part |
| STEM, GENUINE | 401/1540 | 401/ETA 2004-1 | Buy part |
| WINDING PINION | 410/1383 | 410/ETA 2000 | Buy part |
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