The Seiko W620-4480 is a watch model based on the W620 movement.
Parts List
| ESHW17A60A | crystal - crystal (organic) |
| 0F300BAD1 | case back gasket - case back gasket |
| WQ26AZ | band - band |
| W6204480N2A | others - case |
| 81518099 | others - case back screw |
| W6204480 | others - case back |
| T120BS | others - push pin |
| T180BS | others - push pin |