The Seiko A904-506A is a watch model based on the A904 movement.
Parts List
| ES8W14HM02 | crystal |
| FH2882B0A | case back gasket - case back gasket |
| 86573480 | crystal gasket - plastic gasket for crystal |
| 80613349 | pusher - button |
| ZLM27 | band |
| EC0060B0A | others - button gasket |
| 83200271 | others - button spring clip |
| A200CS | others - push pin |
| A9041 | others - machine code |
| A904503A9989 | others - panel cover |
| A904506A61 | others - case |
| 81350460 | others - button spring |