The Seiko W050-4000 is a watch model based on the W050 movement.
Parts List
| 0F305BAA1 | case back gasket |
| 8063561A | pusher |
| AD006BAA1 | pusher - button gasket |
| 8063561B | pusher |
| 8063561C | pusher |
| AL88G | band - leather band |
| AL89G | band - leather band |
| 81351339 | others - button spring |
| A170CS | others - push pin |
| 83200211 | others - button spring clip |
| 0F305BAA1 | case back gasket |
| 8063561A | pusher |
| AD006BAA1 | pusher - button gasket |
| 8063561B | pusher |
| 8063561C | pusher |
| AL88G | band - leather band |
| AL89G | band - leather band |
| 81351339 | others - button spring |
| A170CS | others - push pin |
| 83200211 | others - button spring clip |