The Seiko Y481-7770 is a watch model based on the Y481 movement.
Parts List
| SAGN43LN01 | crystal |
| 35E17NN1 | crown |
| 35E17NS1 | crown |
| 0G2125B01 | case back gasket - case back gasket |
| 825LZ | band - leather band |
| 827LZ | band - leather band |
| A120BS | others - push pin (for lb) |