The Seiko 5P31-6D30 is a watch model based on the 5P31 movement.
Parts List
| 265W24SN02 | crystal |
| 35MD0EH1 | crown |
| 0A2400B01 | case back gasket |
| AK31D | band - leather band |
| AK56C | band - leather band |
| 10T68AGH | others - hour hand |
| 82801940 | others - case ring |
| 5P316D30 | others - case back |
| 5P316D30RC | others - case |
| 5P316F00XS29 | others - dial |
| 5P316F90XS14 | others - dial |
| 5P319 | others - machine code |
| A170BS | others - push pin |
| 0351670 | others - winding stem |
| 10T98NBH | others - hour hand |
| 10T98FGM | others - minute hand |
| 13SC04A2 | others - second hand |
| 13SC04AB | others - second hand |
| 10T98NBM | others - minute hand |