The Seiko 5J21-0A20 is a watch model based on the 5J21 movement.
Parts List
| 290WA8SN01 | crystal - crystal |
| 8K45D2SNW1 | crown - crown |
| FE298BAD2 | case back gasket - case back gasket |
| 86581160 | crystal gasket - plastic gasket for crystal |
| D1E8AQ | band - metal band |
| DE02AW | band - band |
| D1E8AQ-LK00 | band - link |
| D1E8AQ-BK00 | clasp - clasp |
| 1AE075LBBE1 | others - hour hand |
| 2BE115L4BES | others - minute hand |
| 3AA125F0AA9 | others - second hand |
| 0351557 | others - winding stem |
| 82840420 | others - case ring |
| AD006BAD1 | others - crown and stem gasket |
| D1E8AQ-BKPN | others - pin for buckle/clasp |
| D1E8AQ-BKPP | others - spring bar for buckle/clasp |
| D1E8AQ-EP00 | others - endpiece |
| 5J210A2061 | others - case |
| 5J210A20 | others - case back |
| 5J210A20XS13 | others - dial |
| 5J212 | others - machine code |
| A180BS | others - push pin |
| D1E8AQ-LKPN | others - pin for link |
Other models with the same movement