The Seiko 1F20-5150 is a watch model based on the 1F20 movement.
Parts List
| RE3A43S20A | crystal - crystal |
| RE3A43S20B | crystal |
| 30MH2NA1 | crown |
| 0F130BA1S | case back gasket - case back gasket |
| CA25BW | band - band |
| CA27BW | band - band |
| CA29BW | band - band |
| 1CE032LABHG | others - hour hand |
| 2CE050L2BHG | others - minute hand |
| 0351807 | others - winding stem |
| 1F200390XA19 | others - dial |
| 1F200390XS19 | others - dial |
| 1F200400XA29 | others - dial |
| 1F203 | others - machine code |
| A150AS | others - push pin |
| 1F20515075A | others - case |
| 82873150 | others - case ring |
| 1F205150 | others - case back |
| EZ0035B01 | others - crown and stem gasket |
Caliber 1F20
