The Seiko 2J31-0A20 is a watch model based on the 2J31 movement.
Parts List
| 175A14SZ0A | crystal - crystal |
| 30MK8NA4 | crown - crown |
| 0F170NA1S | case back gasket - case back gasket |
| D003EB | band - band |
| 1BF045L2BDG | others - hour hand |
| 2BF070L2BDG | others - minute hand |
| 81606439 | others - bracelet fixing pin |
| 81190055 | others - bracelet fixing pipe |
| 0351400 | others - winding stem |
| 2J310A207Z | others - case |
| 82837780 | others - case ring |
| 2J310A20 | others - case back |
| 2J310A30XS14 | others - dial |
| 2J314 | others - machine code |
| 07SC06DG | others - second hand |
| EZ0035B01 | others - crown and stem gasket |
Other models with the same movement