The Seiko 2J31-0020 is a watch model based on the 2J31 movement.
Parts List
| 190P17SN02 | crystal - crystal |
| 6K30A2SNGA | crown - crown |
| 0F185BAA3 | case back gasket - case back gasket |
| 86580856 | crystal gasket - plastic gasket for crystal |
| D0G4CZ | band - band |
| D0G4AZ | band - band |
| D0G4CZ-LK4 | band - link |
| D0G4CZ-BKM | clasp - buckle |
| 1BF055LCBDG | others - hour hand |
| 2BF080LABDG | others - minute hand |
| 3EA080A0BDG | others - second hand |
| 81606439 | others - bracelet fixing pin |
| 81190055 | others - bracelet fixing pipe |
| 81607579 | others - bracelet fixing pin |
| 0351400 | others - winding stem |
| 2J31002061A | others - case |
| 82872330 | others - case ring |
| 2J310020 | others - case back |
| 2J310020XBA | others - case |
| 2J310020XBB | others - case |
| 2J310040XL14 | others - dial |
| 2J310040XS14 | others - dial |
| 2J314 | others - machine code |
| EZ0035B01 | others - crown and stem gasket |
| 3DA080AABDG | others - second hand |
Other models with the same movement