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Seiko W339-4A20
The Seiko W339-4A20 watch movement is a mechanical movement that operates based on internal mechanical parts rather than relying on a battery or electronic components.
The Seiko W339-4A20 features the following functions:
- Mechanical Movement
Balance Staff Listing
| Ronda Reference # | Shock System | Buy |
|---|
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.30 x 0.115 x 400 x 11.5 mm | GR3299 | Manual | Buy mainspring |
| 1.30 x 0.110 x 340 x 10.0 mm | GR3285 | 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 |
|---|---|---|---|
| COUPLING CLUTCH BANK ECCENTRIC | X/1540 | 8401 | Buy part |
| SCREW, SLIDE GEAR | X/1542 | 58103/MOV 90 | Buy part |
| STAFF, HSP 40 | 100/959 | Buy part | |
| STAFF, HSP 50 | 100/1409 | Buy part | |
| STEM | 200/632F | Buy part |
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