The Seiko 1F20-6B50 is a watch model based on the 1F20 movement.
Parts List
| K00A34SR02 | crystal - crystal |
| 25M20NA3 | crown |
| 0F150NA1S | case back gasket - case back gasket |
| D0A8BB | band - band |
| 1CC035A0BNG | others - hour hand |
| 2CC052A0BNG | others - minute hand |
| 81606439 | others - bracelet fixing pin |
| 81190055 | others - bracelet fixing pipe |
| 1F206B507N | others - case |
| 82836240 | others - case ring |
| 1F206B50 | others - case back |
| 1F202J50XA14 | others - dial |
| 1F205 | others - machine code |
| 0351807 | others - winding stem |
| EZ0035B01 | others - crown and stem gasket |
Caliber 1F20
