The Seiko Y504-800A is a watch model based on the Y504 movement.
Parts List
| 305W20GN00 | crystal |
| 40M58NS1 | crown - crown |
| FH2980B01 | case back gasket - case back gasket |
| 86179400 | crystal gasket - plastic gasket for crystal |
| GA970 | band - metal band |
| A200CS | others - push pin |
| 0354601 | others - winding stem |
| DJ0060B01 | others - crown gasket |
| 12BE0CQH | others - hour hand |
| 12BE0CQM | others - minute hand |
| 13SB18ES | others - second hand |
| 13SB11NS | others - second hand |
Other models with the same movement
| Y504-8000 |
| Y504-8010 |