The Seiko 1F20-0J80 is a watch model based on the 1F20 movement.
Parts List
| 145N12SK01 | crystal |
| 30MB0NA1 | crown - crown |
| 0F130NA12 | case back gasket - case back gasket |
| HZ24B | band - metal band |
| 1CC040A0BNG | others - hour hand |
| 0351807 | others - winding stem |
| 81182699 | others - bracelet fixing pipe |
| 81609399 | others - bracelet fixing pin |
| 82821000 | others - case ring |
| 1F200J80 | others - case back |
| 1F200J802N | others - case |
| 1F202D60XS14 | others - dial |
| 1F205 | others - machine code |
| 2CC057AMBDG | others - minute hand |
| DZ0041B01 | others - crown and stem gasket |
Caliber 1F20
