The Seiko 1F20-6D90 is a watch model based on the 1F20 movement.
Parts List
| RE1A80SC0C | crystal - crystal |
| RE1A80SC0D | crystal - crystal |
| 30M56NJ1 | crown - crown |
| 0F180NA1S | case back gasket - case back gasket |
| C041AB | band - band |
| C041CB | band - band |
| 1CA030F6BCK | others - hour hand |
| 1CA030F6BCL | others - hour hand |
| 2CA050F2BCK | others - minute hand |
| 2CA050F2BCL | others - minute hand |
| 81606439 | others - bracelet fixing pin |
| 81190055 | others - bracelet fixing pipe |
| 82837660 | others - case ring |
| 1F206D9079 | others - case |
| 1F206D90 | others - case back |
| 1F206D907H | others - case |
| 1F202M80XB13 | others - dial |
| 1F202M80XB24 | others - dial |
| 1F205 | others - machine code |
| 0351807 | others - winding stem |
| EZ0035B01 | others - crown and stem gasket |
Caliber 1F20
