The Seiko 1F20-6F20 is a watch model based on the 1F20 movement.
Parts List
| RE2A12JR02 | crystal - crystal |
| 30M56ND1 | crown - crown |
| 30M56TA1 | crown - crown |
| 30M56NJ1 | crown - crown |
| 0F180NA1S | case back gasket - case back gasket |
| C048BZ | band - band |
| C049AZ | band - band |
| C050BZ | band - band |
| 1CE022L0BDG | others - hour hand |
| 2CE035L0BDG | others - minute hand |
| 1CE022L0BDS | others - hour hand |
| 2CE035L0BDS | others - minute hand |
| 0351807 | others - winding stem |
| 81606439 | others - bracelet fixing pin |
| 81190055 | others - bracelet fixing pipe |
| 82837660 | others - case ring |
| 1F206F2075 | others - case |
| 1F206F20 | others - case back |
| 1F206F2075A | others - case |
| 1F206F207E | others - case |
| 1F202N90XB13 | others - dial |
| 1F202N90XG14 | others - dial |
| 1F202N90XS24 | others - dial |
| 1F205 | others - machine code |
| EZ0035B01 | others - crown and stem gasket |
Caliber 1F20
