The Seiko 7J21-0AC0 is a watch model based on the 7J21 movement.
Parts List
| 320P32SB0A | crystal - crystal (sapphire) |
| 8K60D8STW1 | crown - crown |
| FE308BAD2 | case back gasket - case back gasket |
| 86584300 | crystal gasket - plastic gasket for crystal |
| 86178710 | bezel gasket - plastic gasket for bezel |
| HP1Z02SMS0A | pusher - button |
| D283DG | band - band |
| DFN3AW | band - band |
| DFN2AW | band - band |
| D283DG-LK00 | band - link |
| D283DG-BK00 | clasp - clasp |
| 3BG032F0BAH | others - small hand(3h) |
| 3BG032F0BAJ | others - sub hand (10h) |
| 3AA130ACAAJ | others - second hand |
| 1AH085L0BEM | others - hour hand |
| 2BH125L0BEM | others - minute hand |
| 3BG032F0BAM | others - small hand(3h) |
| 3AA130ACAAB | others - second hand |
| 1AE085L0BEJ | others - hour hand |
| 2BE125L0BEJ | others - minute hand |
| 1AE085L0BEH | others - hour hand |
| 2BE125L0BEH | others - minute hand |
| 1AH085L0BEJ | others - hour hand |
| 2BH125L0BEJ | others - minute hand |
| 83200273 | others - button spring clip |
| 81351630 | others - button spring |
| AD006BAD1 | others - crown and stem gasket |
| 0351583 | others - winding stem |
| 7J210AC001A | others - case |
| 85941964 | others - bezel |
| 0866650 | others - holding ring for dial |
| 7J210AF0XB13 | others - dial |
| 7J210AF0XS13 | others - dial |
| 7J210AG0XB13 | others - dial |
| 7J210AH0XG13 | others - dial |
| 7J212 | others - machine code |
| 84334824 | others - dial ring |
| 84334825 | others - dial ring |
| 84334826 | others - dial ring |
| 86510149 | others - conducting plate |
| 7J210AC0 | others - case back |
| 7J210AC002A | others - case |
| 85942064 | others - bezel |
| 7J210AC003A | others - case |
| D283DG-BKPP | others - spring bar for buckle/clasp |
| D283DG-LKPC | others - pipe for link |
| D283DG-LKPN | others - pin for link |
| S200BS | others - push pin |
Other models with the same movement