The Seiko 1F20-5220 is a watch model based on the 1F20 movement.
Parts List
| RE4A05S30A | crystal - crystal |
| RE4A05S30B | crystal - crystal |
| 6M30C9SNG0 | crown - crown |
| 6M30C9SNW0 | crown - crown |
| 0F130BA1S | case back gasket - case back gasket |
| CA40BW | band - band |
| CA42AW | band - band |
| 1CE027L2BHG | others - hour hand |
| 2CE042LABHG | others - minute hand |
| 1CE027L2BHS | others - hour hand |
| 2CE042LABHS | others - minute hand |
| 82873150 | others - case ring |
| 1F200490XB19 | others - dial |
| 1F200490XG29 | others - dial |
| 1F205 | others - machine code |
| A180AS | others - push pin |
| 1F20522075A | others - case |
| 1F205220 | others - case back |
| 1F2052207EA | others - case |
| 0351807 | others - winding stem |
| EZ0035B01 | others - crown and stem gasket |
Caliber 1F20
