The Seiko A904-5100 is a watch model based on the A904 movement.
Parts List
| SA8W32LM01 | crystal |
| 86560320 | case back gasket - plastic gasket for case back |
| EG0115B01 | case back gasket - button gasket |
| 86574100 | crystal gasket - plastic gasket for crystal |
| 80600361 | pusher |
| B1409G | band - metal band |
| B1409G-LKG | band - link |
| B1409G-PB1 | clasp - parts for buckle/clasp |
| B1409G-BK1G | clasp - clasp |
| A200BS | others - push pin |
| A9041 | others - machine code |
| A904506A9989 | others - panel cover |
| A904510075 | others - case |