The Seiko 1F20-6B20 is a watch model based on the 1F20 movement.
Parts List
| SA0A22JN02 | crystal |
| 30MA2NA1 | crown - crown |
| 0F160NA1S | case back gasket - case back gasket |
| D079BQ | band - metal band |
| 0351807 | others - winding stem |
| 81606439 | others - bracelet fixing pin |
| 81190055 | others - bracelet fixing pipe |
| 1F202J10XS24 | others - dial |
| 1F205 | others - machine code |
| 1F206B20 | others - case back |
| 1F206B2075 | others - case |
| 82835860 | others - case ring |
| EZ0035B01 | others - crown and stem gasket |
| 2CC047A0BAA | others - minute hand |
| 1CC032A0BAA | others - hour hand |
Caliber 1F20
