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Seiko 4N20-0840
The Seiko 4N20-0840 watch movement features a timer function, allowing for the tracking and measurement of specific time durations.
The Seiko 4N20-0840 features the following functions:
- Timer Function
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 |
|---|---|---|---|
| STAFF, TIMER 16S | 22BB/34A | 4430/WAL | Buy part |
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