The Seiko 5P31-6C40 is a watch model based on the 5P31 movement.
Parts List
| 265W04SV01 | crystal |
| 38M06NA2 | crown |
| 0A2600B0A | case back gasket |
| 86570621 | crystal gasket |
| YB27A | band - metal band |
| 12SC40HA | hand - second hand |
| 5P316C40 | others - case back |
| 5P316C406Y | others - case |
| 5P316E10XS24 | others - dial |
| 5P319 | others - machine code |
| 87020163 | others - back plate |
| 0351670 | others - winding stem |
| 81606439 | others - bracelet fixing pin |
| 81180229 | others - bracelet fixing pipe |
| 82802780 | others - case ring |
| 11TF0DGH | others - hour hand |
| 11TF0DGM | others - minute hand |
| 0Z0060B01 | others - crown and stem gasket |