The Seiko 1F20-0E40 is a watch model based on the 1F20 movement.
Parts List
| 180W14SV01 | crystal |
| 180W14SV02 | crystal |
| 30MD8NA1 | crown |
| 0A1600B01 | case back gasket |
| HK25C | band - leather band |
| HK26C | band - leather band |
| 0351807 | others - winding stem |
| 1F200E40 | others - case back |
| 1F200E4075 | others - case |
| 1F200E407N | others - case |
| 1F201F30XB19 | others - dial |
| 1F201F30XS19 | others - dial |
| 1F209 | others - machine code |
| 82814380 | others - case ring |
| 87020460 | others - back plate |
| A110AS | others - push pin |
| EZ0035B01 | others - crown and stem gasket |
| 07Y48NGM | others - minute hand |
| 07Y48NGH | others - hour hand |
Caliber 1F20
