The Seiko W620-4290 is a watch model based on the W620 movement.
Parts List
| ESHW17A30A | crystal - crystal |
| 0F300BAA1 | case back gasket - case back gasket |
| 0F300BAD1 | case back gasket - case back gasket |
| 80710336 | pusher - button |
| 80632459 | pusher - button |
| WM87DZ | band - band |
| W6204290N2A | others - case |
| T180BS | others - push pin |
| 82431036 | others - bezel |
| AD006BA11 | others - crown and stem gasket |
| 81518099 | others - case back screw |
| 81351639 | others - button spring |
| 83200211 | others - button spring clip |