The Seiko 7J21-0AA0 is a watch model based on the 7J21 movement.
Parts List
| 300P72SB0A | crystal - crystal |
| 8K60E4SNW1 | crown - crown |
| FE308BAD2 | case back gasket - case back gasket |
| 86582480 | crystal gasket - plastic gasket for crystal |
| 86582481 | crystal gasket - plastic gasket for crystal |
| 86583960 | bezel gasket - plastic gasket for bezel |
| HP1Z02SMS0A | pusher - button |
| DEM5AW | band - band |
| DEM6AW | band - band |
| DEN5AW | band - band |
| D1Y3DG | band - metal band |
| D1Y3DG-LK00 | band - link |
| DEM5AW-BJ00 | clasp - buckle |
| DEN5AW-BJ00 | clasp - buckle |
| D1Y3DG-BK00 | clasp - clasp |
| 3AH045F0AAH | others - sub hand |
| 1AH085L0BEH | others - hour hand |
| 1AH085L0BEJ | others - hour hand |
| 2BH125L0BEH | others - minute hand |
| 2BH125L0BEJ | others - minute hand |
| 3AH035F0AAH | others - small hand (9h) |
| 3AH035F0AAJ | others - small hand (9h) |
| 3AX130FSAAM | others - second hand |
| 1AH085L0BEP | others - hour hand |
| 2BH125L0BEP | others - minute hand |
| 3AH045F0AAJ | others - sub hand |
| 7J210AA0 | others - case back |
| 7J210AA003A | others - case |
| 7J210AA002A | others - case |
| 0866650 | others - holding ring for dial |
| 7J210AA0XB13 | others - dial |
| 7J210AA0XS13 | others - dial |
| 7J210AB0XB13 | others - dial |
| 7J210AB0XS13 | others - dial |
| 7J210AE0XS13 | others - dial |
| 7J212 | others - machine code |
| 84333904 | others - dial ring |
| 84333905 | others - dial ring |
| 84333906 | others - dial ring |
| 86510069 | others - conducting plate |
| 0351583 | others - winding stem |
| 7J210AA001A | others - case |
| 85940104 | others - bezel |
| 83200273 | others - button spring clip |
| 81351630 | others - button spring |
| AD006BAD1 | others - crown and stem gasket |
| D1Y3DG-BKPN | others - pin for buckle/clasp |
| D1Y3DG-BKPP | others - spring bar for buckle/clasp |
| D1Y3DG-EP00 | others - endpiece |
| S200BS | others - push pin |
| D1Y3DG-LKPN | others - pin for link |
Other models with the same movement