The Seiko 1F21-0C30 is a watch model based on the 1F21 movement.
Parts List
| 190W24SN01 | crystal |
| 30MA2EH1 | crown |
| 0A1700B01 | case back gasket |
| DK10D | band - band |
| 07SC02NG | others - second hand |
| 0351807 | others - winding stem |
| 07SC02AB | others - second hand |
| 1F210C30 | others - case back |
| 1F210C30RC | others - case |
| 1F210D60XG19 | others - dial |
| 1F210G40XS19 | others - dial |
| 1F219 | others - machine code |
| A120AS | others - push pin |
| 82822840 | others - case ring |
| EZ0035B01 | others - crown and stem gasket |
| 07TF0NBH | others - hour hand |
| 07TF0NBM | others - minute hand |
| 07TB8AGH | others - hour hand |
| 07TB8AGM | others - minute hand |