The Seiko 1F20-0J39 is a watch model based on the 1F20 movement.
Parts List
| ESMN28SR01 | crystal |
| ESMN28SR | crystal |
| 30ML2NA1 | crown |
| 0H1400N01 | case back gasket - case back gasket |
| 0H1400N0 | case back gasket |
| 0D200NA12 | bezel gasket |
| ZJA55G | band |
| 0351807 | others - winding stem |
| 82821420 | others - case ring |
| 1F200J39 | others - case back |
| 1F200J3926 | others - case |
| 1F202D00XG14 | others - dial |
| 1F205 | others - machine code |
| 81501641 | others - screw |
| 82320861 | others - bezel |
| ZJA55G-EP3 | others - endpiece |
| 2CF085A0BNG | others - minute hand |
| EZ0035B01 | others - crown and stem gasket |
| 1CF060A0BNG | others - hour hand |
Caliber 1F20
