The Seiko W307-4040 is a watch model based on the W307 movement.
Parts List
| SAAW60LM01 | crystal |
| SAAW60LM02 | crystal |
| SAAW60LM03 | crystal |
| SAAW60LM04 | crystal |
| 86560320 | case back gasket - plastic gasket for case back |
| EA0090B0A | case back gasket - button gasket |
| 86577340 | crystal gasket - plastic gasket for crystal |
| 80612929 | pusher |
| 369LC | band - resin band |
| 487MC | band - metal band |
| 81350480 | others - button spring |
| A180CS | others - push pin |
| W3070 | others - machine code |
| W307404061 | others - case |
| W307404061A | others - case |
| W307404061B | others - case |
| W307404061C | others - case |
| 83200101 | others - button spring clip |
| SAAW60LM01 | crystal |
| SAAW60LM02 | crystal |
| SAAW60LM03 | crystal |
| SAAW60LM04 | crystal |
| 86560320 | case back gasket - plastic gasket for case back |
| EA0090B0A | case back gasket - button gasket |
| 86577340 | crystal gasket - plastic gasket for crystal |
| 80612929 | pusher |
| 369LC | band - resin band |
| 487MC | band - metal band |
| 81350480 | others - button spring |
| A180CS | others - push pin |
| W3070 | others - machine code |
| W307404061 | others - case |
| W307404061A | others - case |
| W307404061B | others - case |
| W307404061C | others - case |
| 83200101 | others - button spring clip |
Other models with the same movement