The Seiko 1F20-1A80 is a watch model based on the 1F20 movement.
Parts List
| 145A02SN02 | crystal |
| 30MF8NA1 | crown - crown |
| 0F140NA1S | case back gasket - case back gasket |
| D020CQ | band - metal band |
| 81606439 | others - bracelet fixing pin |
| 81180229 | others - bracelet fixing pipe |
| 82821420 | others - case ring |
| 1F201A80 | others - case back |
| 1F201A807N | others - case |
| 1F202G20XL14 | others - dial |
| 1F202G30XS19 | others - dial |
| 1F205 | others - machine code |
| 0351807 | others - winding stem |
| 1CC040A0BNG | others - hour hand |
| 2CC057AMBDG | others - minute hand |
| 1CC040A2BNG | others - hour hand |
| EZ0035B01 | others - crown and stem gasket |
| 2CC060A0BDG | others - minute hand |
Caliber 1F20
