The Seiko W120-4A20 is a watch model based on the W120 movement.
Parts List
| 0G320BA12 | case back gasket - case back gasket |
| FF48JZ | band - band |
| W1204A2001 | others - case |
| W1204A2002 | others - case |
| T200BS | others - push pin |
Other models with the same movement
| W120-4A10 |