The Seiko 1F21-0AN0 is a watch model based on the 1F21 movement.
Parts List
| RE7A68SB0A | crystal - crystal (sapphire) |
| 6K35Z2SNWC | crown - crown |
| 6K35Z2SNWA | crown - crown |
| 0F170BAD2 | case back gasket - case back gasket |
| D280AB | band - band |
| D280CB | band - band |
| D280AB-LK00 | band - link |
| D280CB-LK00 | band - link |
| DFJ9AB | band - band |
| DFJ9AB-BK00 | clasp - clasp |
| D280CB-BK00 | clasp - clasp |
| D280CB-BKLK-12H | clasp - parts for buckle/clasp |
| D280CB-BKLK-6H | clasp - parts for buckle/clasp |
| D280AB-BK00 | clasp - clasp |
| D280AB-BKLK-12H | clasp - parts for buckle/clasp |
| D280AB-BKLK-6H | clasp - parts for buckle/clasp |
| 1BH030A0BNN | others - hour hand |
| 2BH045A0BNN | others - minute hand |
| 1BH032A1BNJ | others - hour hand |
| 2BH045A1BNJ | others - minute hand |
| 82845160 | others - case ring |
| 1F210AN0 | others - case back |
| 07SC06DS | others - second hand |
| 0351807 | others - winding stem |
| AC004BAD1 | others - crown and stem gasket |
| 1F210AN002A | others - case |
| 1F210BB0XS1Z | others - dial |
| 1F210BB0XZ1Z | others - dial |
| 1F213 | others - machine code |
| B080BS | others - push pin |
| D280AB-BKPN | others - pin for buckle/clasp |
| D280AB-BKPP | others - spring bar for buckle/clasp |
| D280AB-LKPN | others - pin for link |
| 1F210AN001A | others - case |
| D280CB-BKPN | others - pin for buckle/clasp |
| D280CB-BKPP | others - spring bar for buckle/clasp |
| D280CB-LKPN | others - pin for link |