
The Seiko Y481-7770 features the following functions:
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.40 x 0.110 x 340 x 10.0 mm | GR3700 | Manual | Buy mainspring |
| 1.40 x 0.110 x 320 x 9.5 mm | GR3699 | Manual | Buy mainspring |
| Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) |
|---|
| Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) |
|---|
| Part Description | Reference # | Alternate | Buy |
|---|---|---|---|
| CANNON PINION, SS HT 2.25 | 245/327 | 5076 | Buy part |
| MAINSPRING 1.40-.11-320 9,5 | MS-510M | GR 3699 | Buy part |
| STAFF, COL 55 RIV 85 # | 100/71 | Buy part | |
| STEM | 200/1458 | Buy part |
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