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Seiko 6640-6020
The Seiko 6640-6020 watch movement is a mechanical movement that features the following functions:
The Seiko 6640-6020 features the following functions:
- Mechanical Movement
Balance Staff Listing
| Ronda Reference # | Shock System | Buy |
|---|
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.10 x 0.100 x 240 x 8.0 mm | GR2611 | Manual | Buy mainspring |
| 1.10 x 0.090 x 240 x 7.5 mm | GR2592 | 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 1.10-.10-240 8 | MS-211E | GR 2611 | Buy part |
| PALLET ARBOR | 72S/48P | 714/FEF 120 | Buy part |
| ROLLER 190X80X36 | 82S/58R | Buy part | |
| STAFF | 100/170 | Buy part | |
| STEM | 200/119F | Buy part |
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