The Seiko W598-4A20 is a watch model based on the W598 movement.
Parts List
| DG224BE16 | case back gasket - case back gasket |
| EG0115B01 | case back gasket - button gasket |
| 80615384 | pusher |
| 8061538D | pusher |
| KL93F | band - band |
| KL92F | band - leather band |
| T130BS | others - push pin |
| W5984A20A2A | others - case |
Other models with the same movement
| W598-4A00 |
| W598-4A10 |
| W598-4A30 |