The Seiko 7731-5230 is a watch model based on the 7731 movement.
Parts List
| RECN13SN00 | crystal |
| 30NE1DA5 | crown - crown |
| 0F240NA11 | case back gasket |
| LK34D | band - leather band |
| 08S57DGH | others - hour hand |
| 0354371 | others - winding stem |
| DZ0040B01 | others - crown and stem gasket |
| 7731523025A | others - case |
| 77315260XG14 | others - dial |
| 773162 | others - machine code |
| 82721470 | others - case ring |
| 89968111 | others - back plate |
| A180AS | others - push pin |
| 08S57DGM | others - minute hand |
| 09SC25VG | others - second hand |