The Seiko A904-5040 is a watch model based on the A904 movement.
Parts List
| ES8W00LN01 | crystal |
| 86560320 | case back gasket - plastic gasket for case back |
| EG0115B01 | case back gasket - button gasket |
| 86573120 | crystal gasket - plastic gasket for crystal |
| 80600369 | pusher - button |
| Z1244S | band - metal band |
| A180BS | others - push pin |
| A9041 | others - machine code |
| A904502A9989 | others - panel cover |
| A904504061 | others - case |