The Seiko W240-4020 is a watch model based on the W240 movement.
Parts List
| 0F280BAA1 | case back gasket - case back gasket |
| 0F280BAD1 | case back gasket - case back gasket |
| 80632459 | pusher - button |
| 80632870 | pusher - button |
| FCR5HZ | band - band |
| FCR4HZ | band - band |
| W2404020N2A | others - case |
| W2404020N2B | others - case |
| 81518099 | others - case back screw |
| 81351639 | others - button spring |
| 81514459 | others - case back screw |
| A140BS | others - push pin |
| T150BS | others - push pin |
| AD006BA11 | others - crown and stem gasket |
| 83200211 | others - button spring clip |
Other models with the same movement