The Seiko 1F20-6D20 is a watch model based on the 1F20 movement.
Parts List
| RE1A36SN01 | crystal - crystal |
| 32M10NA1 | crown - crown |
| 32M10NS1 | crown |
| 0F200NA1S | case back gasket - case back gasket |
| DB47AB | band - band |
| DB48AB | band - band |
| DB49BB | band - band |
| 1CE045L2BDG | others - hour hand |
| 2CE065L2BDG | others - minute hand |
| A130AS | others - push pin (for lb) |
| 1F202L40XL14 | others - dial |
| 1F202L40XS14 | others - dial |
| 1F202L40XY14 | others - dial |
| 1F205 | others - machine code |
| 87020460 | others - back plate |
| 1F206D208Z | others - case |
| 1F206D2061 | others - case |
| 82837060 | others - case ring |
| 1F206D20 | others - case back |
| 1F206D208M | others - case |
| 0351807 | others - winding stem |
| EZ0035B01 | others - crown and stem gasket |
Caliber 1F20
