The Seiko 1F20-0120 is a watch model based on the 1F20 movement.
Parts List
| 210A13SN0A | crystal - crystal |
| 30MH2NA1 | crown |
| 0F120BA1S | case back gasket - case back gasket |
| CA35BW | band - band |
| CA36BW | band - band |
| CA28BW | band - band |
| CA30BW | band - band |
| CA34BW | band - band |
| 1CE040L0BHG | others - hour hand |
| 2CE060L0BHG | others - minute hand |
| 82833850 | others - case ring |
| 0351807 | others - winding stem |
| 1F200370XG19 | others - dial |
| 1F200370XL19 | others - dial |
| 1F200370XR19 | others - dial |
| 1F200370XS19 | others - dial |
| 1F200380XA19 | others - dial |
| 1F203 | others - machine code |
| A150AS | others - push pin |
| 1F20012075A | others - case |
| 1F200120 | others - case back |
| EZ0035B01 | others - crown and stem gasket |
Caliber 1F20
