The Seiko 5P31-5310 is a watch model based on the 5P31 movement.
Parts List
| SA5W19SV01 | crystal |
| 35M81NA1 | crown |
| 0F260BAA3 | case back gasket - case back gasket |
| LK35D | band - leather band |
| 3AA125F1ANG | others - second hand |
| EB0055B01 | others - crown and stem gasket |
| 0351671 | others - winding stem |
| 82820210 | others - case ring |
| 5P315290XS14 | others - dial |
| 5P3153106R | others - case |
| 5P3161 | others - machine code |
| A170BS | others - push pin |
| 10T09DGH | others - hour hand |
| 10T09DGM | others - minute hand |
| 1BG070LBBDG | others - hour hand |
| 10SC23T1 | others - second hand |
| 2BG105LABDG | others - minute hand |