The Seiko Y799-4B18 is a watch model based on the Y799 movement.
Parts List
| 0A2550B01 | case back gasket |
| EG0115B01 | case back gasket - button gasket |
| 80615440 | pusher - button |
| 216MZ | band |
| 215MZ | band - band |
| 221LB | band - band |
| Y7994B18NCA | others - case |
| Y7994B18NCB | others - case |
| A170BS | others - push pin |