The Seiko Y798-4000 is a watch model based on the Y798 movement.
Parts List
| SAGN74AM01 | crystal |
| SAGN96AM01 | crystal - crystal (organic) |
| SAGN98AM01 | crystal - crystal (organic) |
| SAGN98AM02 | crystal - crystal (organic) |
| SAGN74AM02 | crystal |
| SAGN76AM01 | crystal |
| SAGN94AM01 | crystal |
| 0A2550B01 | case back gasket |
| EG0115B01 | case back gasket - button gasket |
| 80615380 | pusher |
| 80615384 | pusher |
| 8061538C | pusher |
| KL75D | band - leather band |
| KL76D | band - leather band |
| KL77D | band - leather band |
| KL78D | band - leather band |
| A130BS | others - push pin |
Other models with the same movement