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Seiko 8420-6750
The Seiko 8420-6750 watch movement is an automatic movement that does not feature a second hand. It operates at a beat rate of 28800 vibrations per hour and has a total of 31 jewels.
The Seiko 8420-6750 features the following functions:
- Automatic Winding
- No Second Hand
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) |
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KIF Part Listing
| Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) |
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Documents
Parts Listing
| Part Description | Reference # | Alternate | Buy |
|---|---|---|---|
| BALANCE COMPLETE | 721/IWC 3251 | Buy part | |
| MAINSPRING | 770/IWC 3251 | Buy part |
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