The Seiko 1F20-0G4A is a watch model based on the 1F20 movement.
Parts List
| 140W08SR01 | crystal |
| 30MH2NA1 | crown |
| 0F130NA12 | case back gasket - case back gasket |
| Z5438 | band - metal band |
| Z5456 | band - metal band |
| 1CE035L0BDG | others - hour hand |
| 0351807 | others - winding stem |
| 81181859 | others - bracelet fixing pipe |
| 81606479 | others - bracelet fixing pin |
| 82813320 | others - case ring |
| 1F200G4A | others - case back |
| 1F200G4A75 | others - case |
| 1F201K70XG14 | others - dial |
| 1F205 | others - machine code |
| EZ0035B01 | others - crown and stem gasket |
| 2CE055L0BDG | others - minute hand |
Caliber 1F20
