The Seiko 2J31-5A00 is a watch model based on the 2J31 movement.
Parts List
| ESDW02SN01 | crystal |
| 25M20NA3 | crown |
| 0F180NA1S | case back gasket - case back gasket |
| 86581980 | crystal gasket |
| WI248 | band - band |
| 81923161 | clasp - clasp |
| 0351400 | others - winding stem |
| 2J315A0075 | others - case |
| 82838160 | others - case ring |
| 2J315A00 | others - case back |
| 2J314 | others - machine code |
| 2J315A00X915 | others - dial |
| 07SC06DG | others - second hand |
| 1BF040L0BDG | others - hour hand |
| 2BF057L0BDG | others - minute hand |
| EZ0035B01 | others - crown and stem gasket |
Other models with the same movement