The Seiko W307-4A00 is a watch model based on the W307 movement.
Parts List
| ESJW50LM01 | crystal |
| ESJW50LM02 | crystal |
| 86560320 | case back gasket - plastic gasket for case back |
| EA0090B0A | case back gasket - button gasket |
| 86578220 | crystal gasket |
| 80612929 | pusher |
| NO | band - leather band |
| 021AAS | band |
| 269LA | band |
| 81350480 | others - button spring |
| A200BS | others - push pin |
| W3070 | others - machine code |
| W3074A0061 | others - case |
| W3074A0061A | others - case |
| 83200101 | others - button spring clip |
Other models with the same movement
| W307-4000 |
| W307-4010 |
| W307-4020 |
| W307-4030 |
| W307-4040 |
| W307-4050 |
| W307-4060 |
| W307-4070 |
| W307-4090 |
| W307-4130 |
| W307-4A10 |