The Seiko 1F20-0B00 is a watch model based on the 1F20 movement.
Parts List
| 205W20SN01 | crystal |
| 40MC8NA1 | crown |
| 0A1900B01 | case back gasket - gasket |
| MK56D | band - leather band |
| T070BS | others - push pin |
| 0351807 | others - winding stem |
| 08Y30AAH | others - hour hand |
| 82820020 | others - case ring |
| 1F200B00 | others - case back |
| 1F200B0075 | others - case |
| 1F200F20XS19 | others - dial |
| 1F209 | others - machine code |
| 08Y30AAM | others - minute hand |
| EZ0035B01 | others - crown and stem gasket |
Caliber 1F20
