The Seiko Y520-0040 is a watch model based on the Y520 movement.
Parts List
| 110N02LN01 | crystal - crystal (inorganic) |
| 25E50NF1 | crown |
| 0H1100B01 | case back gasket - case back gasket |
| 658BC | band - metal band |
| 04V04NAH | others - hour hand |
| 04V24NGM | others - minute hand |
| 81182699 | others - bracelet fixing pipe |
| 81609399 | others - bracelet fixing pin |
| 0351930 | others - winding stem |
| 82725880 | others - case ring |
| Y5200 | others - machine code |
| Y52000402S | others - case |
| Y5200098XS14 | others - dial |