The Seiko Y785-4000 is a watch model based on the Y785 movement.
Parts List
| ES4W30GM01 | crystal |
| ES4W30GM02 | crystal |
| ES4W30GM03 | crystal |
| 0Z2950B0A | case back gasket |
| 86566360 | crystal gasket |
| 86566362 | crystal gasket - plastic gasket for crystal |
| 86566361 | crystal gasket |
| 80680340 | pusher - button axle |
| 80680360 | pusher - button axle |
| AL96A | band - leather band |
| AL97A | band - leather band |
| AL98A | band - leather band |
| 81610259 | others - bracelet fixing pin |
Other models with the same movement
| Y785-4019 |