The Seiko Y799-4A78 is a watch model based on the Y799 movement.
Parts List
| 0A2550B01 | case back gasket |
| EG0115B01 | case back gasket - button gasket |
| 80615440 | pusher - button |
| 221LB | band - band |
| Y7994A78N2 | others - case |
| Y7994A78N2A | others - case |
| Y7994A78N2B | others - case |
| T180BS | others - push pin |