The Seiko Y486-4040 is a watch model based on the Y486 movement.
Parts List
| BA1N81LM60 | crystal |
| BA1N81LM70 | crystal |
| 0H2500B01 | case back gasket - case back gasket |
| 80603571 | pusher |
| 80603574 | pusher |
| EG0060B01 | others - button gasket |
Other models with the same movement
| Y486-4000 |
| Y486-4020 |
| Y486-4030 |
| Y486-4060 |
| Y486-4090 |
| Y486-409A |
| Y486-4100 |
| Y486-5010 |
| Y486-5020 |
| Y486-5030 |