The Seiko Y799-5020 is a watch model based on the Y799 movement.
Parts List
| SA6W86GN00 | crystal |
| 86569180 | case back gasket |
| 86569220 | crystal gasket |
| 80605103 | pusher |
| GA89A | band - metal band |
| A180CS | others - push pin |
| EG0060B01 | others - button gasket |
| 83200271 | others - button spring clip |