The Seiko 1F21-0F00 is a watch model based on the 1F21 movement.
Parts List
| 175W10SK01 | crystal |
| 30MA2NB1 | crown - crown |
| 0A1700B01 | case back gasket |
| MK28F | band - leather band |
| 3BA075F0BNG | others - second hand |
| 0351807 | others - winding stem |
| 82822840 | others - case ring |
| 1F210F00 | others - case back |
| 1F210F0075 | others - case |
| 1F210H50X914 | others - dial |
| 1F215 | others - machine code |
| A110AS | others - push pin |
| 1BH047A0BNG | others - hour hand |
| 2BH070A0BDG | others - minute hand |
| EZ0035B01 | others - crown and stem gasket |