The Seiko 5P31-6020 is a watch model based on the 5P31 movement.
Parts List
| 260N29JN01 | crystal |
| 32N25NA1 | crown - crown |
| 0H2500B01 | case back gasket - case back gasket |
| DZ0065B01 | case back gasket - button gasket |
| 86572830 | crystal gasket |
| 81832619 | band - other |
| 2K01A | band - leather band |
| 2K02A | band - leather band |
| 3AA125F1ANG | others - second hand |
| 0351671 | others - winding stem |
| 5P316020EA | others - case |
| 5P316020XS19 | others - dial |
| 5P316030X994 | others - dial |
| 81606439 | others - bracelet fixing pin |
| 81181459 | others - bracelet fixing pipe |
| 82732470 | others - case ring |
| 10T29DGH | others - hour hand |
| 10T29DGM | others - minute hand |
| 10SC23T1 | others - second hand |