The Seiko 1F20-5J70 is a watch model based on the 1F20 movement.
Parts List
| K00W96SR01 | crystal |
| 30MK0NA1 | crown |
| 0A1400N01 | case back gasket |
| 81610361 | band - bracelet fixing pin |
| WGA34 | band - leather band |
| 82823000 | others - case ring |
| 0351807 | others - winding stem |
| 1F201G50XB24 | others - dial |
| 1F201G50XS14 | others - dial |
| 1F205J70 | others - case back |
| 1F205J709T | others - case |
| 1F209 | others - machine code |
| 81503021 | others - screw |
| EZ0035B01 | others - crown and stem gasket |
| 06Y02DGM | others - minute hand |
| 05Y10DGH | others - hour hand |
Caliber 1F20
