The Seiko Y520-5A10 is a watch model based on the Y520 movement.
Parts List
| K00A68LN03 | crystal |
| 25M18NV1 | crown - crown |
| 25M18NF1 | crown |
| 0E120NA1S | case back gasket |
| 0E120BA1S | case back gasket - case back gasket(lower) |
| F054BE | band - metal band |
| KZ73E | band - metal band |
| KZ74E | band - metal band |
| 04V56NGH | others - hour hand |
| 04V56NGM | others - minute hand |
| 81182699 | others - bracelet fixing pipe |
| 81609399 | others - bracelet fixing pin |
| 0351930 | others - winding stem |
| EZ0035B01 | others - crown and stem gasket |