The Seiko 7N21-HAA0 is a watch model based on the 7N21 movement.
Parts List
| 300P03HN03 | crystal - crystal |
| 8K60C8SNW1 | crown - crown |
| FE318BAD1 | case back gasket - case back gasket |
| 86573710 | crystal gasket - plastic gasket for crystal |
| 86573715 | crystal gasket - plastic gasket for crystal |
| 86592810 | bezel gasket - plastic gasket for bezel |
| D1E2AG | band - band |
| D1E2AG-LK00 | band - link |
| W5521AM | band - metal band |
| D1E2AG-BK00 | clasp - clasp |
| 1B3090F2BAB | hand - hour hand |
| 2B3130F0BAB | hand - minute hand |
| 3AX135F0AAF | hand - hour hand |
| 1AD085A4BAH | others - hour hand |
| 3A9120F7AAR | others - second hand |
| 82738460 | others - case ring |
| 7N21HAA0 | others - case back |
| D1E2AG-BKPP | others - spring bar for buckle/clasp |
| D1E2AG-EP00 | others - endpiece |
| D1E2AG-LKPN | others - pin for link |
| S200BS | others - push pin |
| AD006BAD1 | others - crown and stem gasket |
| 7N21HAA001H | others - case |
| 8GBAA029 | others - bezel |
| 0351890 | others - winding stem |
| 7N213 | others - machine code |
| 7N21HAA004H | others - case |
| 7N21HAA005H | others - case |
| 7N21HAA0HS19 | others - dial |
| 7N21HAH0HZ19 | others - dial |
| 8GBAA024 | others - bezel |
| 2AD120AMBAC | others - minute hand |
Other models with the same movement