The Seiko 5P31-7A90 is a watch model based on the 5P31 movement.
Parts List
| 265W30SN01 | crystal |
| 35MM6EH1 | crown |
| 0A2600B01 | case back gasket |
| 86570621 | crystal gasket |
| LK42E | band - leather band |
| 0351670 | others - winding stem |
| 82803260 | others - case ring |
| 5P317A50XG19 | others - dial |
| 5P317A90 | others - case back |
| 5P317A90RC | others - case |
| 5P319 | others - machine code |
| A170BS | others - push pin |
| 10TP0NBH | others - hour hand |
| 10TP0NBM | others - minute hand |
| 13SC04AB | others - second hand |
| 0Z0060B01 | others - crown and stem gasket |