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Seiko 7820-5420
The Seiko 7820-5420 watch movement incorporates shock protection to enhance its durability and reliability when subjected to external forces.
The Seiko 7820-5420 features the following functions:
- Shock Protection
Balance Staff Listing
| Ronda Reference # | Shock System | Buy |
|---|
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.60 x 0.100 x 300 x 9.0 mm | GR4486 | 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 |
|---|---|---|---|
| BALANCE COMPLETE, INCA | 721/616 | 722/AS 1200 | Buy part |
| MAINSPRING 1.60-.10-300 9 | MS-711K | GR 4486 | Buy part |
| PALLET ARBOR, 40-90-10 S/S | 72S/81P | 714/AS 1045 | Buy part |
| ROLLER, INCABLOC 180X80X36 | 82S/148R | 730/AUR 18 | Buy part |
| STAFF, INCA COL 60 # | 100/734 | 723/WIT 11BG | Buy part |
| STEM, FEMALE OA 9.55 | 360/18 | 404/AS 1200 | Buy part |
| STEM, HUB 1.25 TAP 10 | 200/56F | 401/AS 1200 | Buy part |
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