The Seiko 1F20-5J6A is a watch model based on the 1F20 movement.
Parts List
| ESLN40JR03 | crystal |
| 30M62NA4 | crown |
| 0H2100B01 | case back gasket |
| HL64A | band - leather band |
| 2CX052S0BDG | hand - minute hand |
| 82824400 | others - case ring |
| A100AS | others - push pin |
| 0351807 | others - winding stem |
| 1CX037S0BDG | others - hour hand |
| 1F201K50XL14 | others - dial |
| 1F205 | others - machine code |
| 1F205J6A | others - case back |
| 1F205J6A26 | others - case |
Caliber 1F20
