The Seiko 2J31-001A is a watch model based on the 2J31 movement.
Parts List
| 180W69SN02 | crystal - crystal |
| 25M25DA5 | crown - crown (3h) |
| 0F150BA1S | case back gasket - case back gasket |
| D0C5CG | band - band |
| D0C5CG-LK00 | band - link |
| D0C5CG-LK9 | band - link |
| D0C5CG-BK00 | clasp - clasp |
| D0C5CG-BKX | clasp - buckle |
| D0C5CG-PB1 | clasp - parts for buckle |
| 3BA075F1BNG | others - second hand |
| 2J310020XS14 | others - dial |
| 2J311 | others - machine code |
| DZ0040B01 | others - crown and stem gasket |
| 81606439 | others - bracelet fixing pin |
| 81190075 | others - bracelet fixing pipe |
| 0351400 | others - winding stem |
| 82871170 | others - case ring |
| 2J31001ASAA | others - case |
| 2J31001A | others - case back |
| D0C5CG-BKPP | others - spring bar for buckle/clasp |
| 2BA075A1BNG | others - minute hand |
| 1BA050A1BNG | others - hour hand |
Other models with the same movement