The Seiko 1F21-5C10 is a watch model based on the 1F21 movement.
Parts List
| BA0A36SR01 | crystal - crystal |
| 40MG6NH1 | crown - crown |
| 40MG6NN1 | crown - crown |
| 0F210NA1S | case back gasket - case back gasket |
| DAT9BW | band - band |
| DAV1AW | band - band |
| DAZ5BW | band - band |
| DAV4BB | band - leather band |
| 3BA075F1BA6 | others - second hand |
| 1BA040A1BAK | others - hour hand |
| 2BA060A1BAK | others - minute hand |
| A120BS | others - push pin (for lb) |
| 1F211F50XS14 | others - dial |
| 1F211F50XS24 | others - dial |
| 1F215 | others - machine code |
| 1F215C1071 | others - case |
| 82836160 | others - case ring |
| 1F215C10 | others - case back |
| 1F215C1075 | others - case |
| 0351807 | others - winding stem |
| EZ0035B01 | others - crown and stem gasket |