The Seiko 1F21-0AZ0 is a watch model based on the 1F21 movement.
Parts List
| K03A38SN02 | crystal - crystal (sapphire) |
| 6K35C6SNW1 | crown - crown (3h) |
| 0F180BAD2 | case back gasket - case back gasket |
| D3E9AB | band - metal band |
| D3E9CB | band - metal band |
| D3E9AB-LK00 | band - link |
| D3E9CB-LK00 | band - link |
| D3E9CB-BK00 | clasp - clasp |
| D3E9CB-BKLK-12H | clasp - parts for buckle/clasp |
| D3E9CB-BKLK-6H | clasp - parts for buckle/clasp |
| D3E9AB-BK00 | clasp - clasp |
| D3E9AB-BKLK-12H | clasp - parts for buckle/clasp |
| D3E9AB-BKLK-6H | clasp - parts for buckle/clasp |
| 1BA045S4BDS | others - hour hand |
| 1BA045S4BDZ | others - hour hand |
| 2BA062S0BDZ | others - minute hand |
| 2BA067S2BDS | others - minute hand |
| 3BA075F0BNZ | others - second hand |
| 3BA075F0BNS | others - second hand |
| 1F210AZ0 | others - case back |
| 1F210AZ001A | others - case |
| 1F210AZ002A | others - case |
| 82845960 | others - case ring |
| 1F210BJ0XR13 | others - dial |
| 1F210BK0XA15 | others - dial |
| 1F210BL0XA13 | others - dial |
| 1F215 | others - machine code |
| AC004BAD1 | others - crown and stem gasket |
| 81606439 | others - bracelet fixing pin |
| 81190055 | others - bracelet fixing pipe |
| D3E9AB-BKPN | others - pin for buckle/clasp |
| D3E9AB-BKPP | others - spring bar for buckle/clasp |
| D3E9AB-LKPN | others - pin for link |
| D3E9CB-BKPN | others - pin for buckle/clasp |
| D3E9CB-BKPP | others - spring bar for buckle/clasp |
| D3E9CB-LKPN | others - pin for link |
| 0351807 | others - winding stem |