The Seiko 1F21-0D10 is a watch model based on the 1F21 movement.
Parts List
| 210W24SN01 | crystal |
| 35MM0NA1 | crown |
| 35MM0NS1 | crown |
| 0A2000B01 | case back gasket |
| ZA27A | band - metal band |
| DK39D | band - leather band |
| DK40D | band - leather band |
| DK41D | band - leather band |
| 0351807 | others - winding stem |
| 08TG4AAH | others - hour hand |
| 1F210D10 | others - case back |
| 1F210D1075 | others - case |
| 1F210D107E | others - case |
| 1F210E60XB13 | others - dial |
| 1F210E70XS13 | others - dial |
| 1F210E70XS24 | others - dial |
| 1F210E70XS34 | others - dial |
| 1F219 | others - machine code |
| 82821680 | others - case ring |
| A140AS | others - push pin |
| 08TG4AAM | others - minute hand |
| EZ0035B01 | others - crown and stem gasket |
| 08TG4ANH | others - hour hand |
| 08TG4ANM | others - minute hand |
| 08TG4NSH | others - hour hand |
| 08TG4NSM | others - minute hand |
| 09SC12NA | others - second hand |
| 09SC12NS | others - second hand |