The Seiko 1F20-0D0A is a watch model based on the 1F20 movement.
Parts List
| 155W04SV01 | crystal |
| 30M52NS3 | crown |
| 0A1400N01 | case back gasket |
| HB50A | band - metal band |
| 82821420 | others - case ring |
| 81610249 | others - bracelet fixing pin |
| 1F200D0A | others - case back |
| 1F200D0ASA | others - case |
| 1F201C90XB14 | others - dial |
| 1F209 | others - machine code |
| 81503609 | others - screw |
| 0351807 | others - winding stem |
| 06Y44DGM | others - minute hand |
| 06Y44NGH | others - hour hand |
| EZ0035B01 | others - crown and stem gasket |
Caliber 1F20
