The Seiko Y520-5050 is a watch model based on the Y520 movement.
Parts List
| K02N72LN01 | crystal |
| 25M24NF1 | crown |
| 0H1300B01 | case back gasket |
| ZZ70A | band - metal band |
| ZZ71A | band - metal band |
| 04V32DAM | others - minute hand |
| 04V32DAH | others - hour hand |
| 81182699 | others - bracelet fixing pipe |
| 81609399 | others - bracelet fixing pin |
| 0351930 | others - winding stem |
| DZ0041B01 | others - crown and stem gasket |