The Seiko 1F20-6D40 is a watch model based on the 1F20 movement.
Parts List
| REDN32SN01 | crystal - crystal |
| 25M04EX1 | crown - crown |
| 0E210NA1S | case back gasket - rotating bezel gasket |
| XX000 | band - band |
| 1CC045A0BNS | others - hour hand |
| 2CC065A0BNS | others - minute hand |
| 82823520 | others - case ring |
| 1F206D4044 | others - case |
| 1F202M40XS13 | others - dial |
| 1F205 | others - machine code |
| 0351807 | others - winding stem |
| DZ0041B01 | others - crown and stem gasket |
Caliber 1F20
