The Seiko W304-4000 is a watch model based on the W304 movement.
Parts List
| EB0300ZD2 | case back gasket |
| DG289BE12 | case back gasket |
| EF015BA11 | case back gasket - (button gasket(front |
| EG0115B01 | case back gasket - button gasket |
| 097LD | band - leather band |
| A170CS | others - push pin |
Other models with the same movement
| W304-4010 |
| W304-4020 |
| W304-4030 |