The Seiko 1F20-0H40 is a watch model based on the 1F20 movement.
Parts List
| 170N04SN01 | crystal - crystal |
| 25M02NE4 | crown - crown |
| 0H1720N01 | case back gasket - case back gasket |
| MK19F | band - band |
| MK20F | band - band |
| 1CG042L0BDG | others - hour hand |
| 2CB070A2BDG | others - minute hand |
| 2CG070L0BDG | others - minute hand |
| 0351807 | others - winding stem |
| 1F202B10XS14 | others - dial |
| 1F202B20XS14 | others - dial |
| 1F205 | others - machine code |
| 87020460 | others - back plate |
| A110AS | others - push pin |
| 1F200H4043 | others - case |
| 82830480 | others - case ring |
| 1F200H40 | others - case back |
| DZ0041B01 | others - crown and stem gasket |
| 1CB045A2BNG | others - hour hand |
Caliber 1F20
