The Seiko W100-4A20 is a watch model based on the W100 movement.
Parts List
| F1D8JZ | band - band |
| W1004A2079Z | others - case |
| A200BS | others - push pin |
Other models with the same movement
| W100-4A10 |
The Seiko W100-4A20 is a watch model based on the W100 movement.
| F1D8JZ | band - band |
| W1004A2079Z | others - case |
| A200BS | others - push pin |
| W100-4A10 |