The Seiko 1F20-0J50 is a watch model based on the 1F20 movement.
Parts List
| 165A06SZ0D | crystal |
| 25M20NA3 | crown |
| 0F150NA1S | case back gasket - case back gasket |
| DZ48B | band - metal band |
| 81182699 | others - bracelet fixing pipe |
| 81609399 | others - bracelet fixing pin |
| 82833720 | others - case ring |
| 1F200J50 | others - case back |
| 1F200J507N | others - case |
| 1F202D40XA14 | others - dial |
| 1F205 | others - machine code |
| 87020460 | others - back plate |
| 0351807 | others - winding stem |
| 1CC045A2BNG | others - hour hand |
| 2CC065A0BDG | others - minute hand |
| EZ0035B01 | others - crown and stem gasket |
Caliber 1F20
