The Seiko 7731-5150 is a watch model based on the 7731 movement.
Parts List
| REAN97SE10 | crystal |
| 30NB7NP5 | crown |
| 0F220BAA3 | case back gasket - case back gasket |
| AK31B | band - leather band |
| 09P53DGH | others - hour hand |
| 09P53DGM | others - minute hand |
| 1AF055L0BDG | others - hour hand |
| 2AF085L0BDG | others - minute hand |
| 0354371 | others - winding stem |
| 7731515000A | others - case |
| 77315180XG14 | others - dial |
| 773162 | others - machine code |
| 82717150 | others - case ring |
| A180AS | others - push pin |
| DZ0040B01 | others - crown and stem gasket |
| 09SC25VG | others - second hand |