The Seiko Y789-5500 is a watch model based on the Y789 movement.
Parts List
| ES3W28GN00 | crystal |
| 86173340 | case back gasket - plastic gasket for crystal |
| EG0115B01 | case back gasket - button gasket |
| 86563080 | crystal gasket |
| 80600383 | pusher |
| AA70B | band - metal band |
| A190CS | others - push pin |