The Seiko 1F20-0B80 is a watch model based on the 1F20 movement.
Parts List
| 160W12SK01 | crystal |
| 30MA2NA1 | crown - crown |
| 0A1500B01 | case back gasket |
| DZ05B | band - metal band |
| 06Y38DGM | others - minute hand |
| 81606439 | others - bracelet fixing pin |
| 81180229 | others - bracelet fixing pipe |
| 1F200B807N | others - case |
| 1F200G90XS19 | others - dial |
| 1F209 | others - machine code |
| 82820240 | others - case ring |
| 0351807 | others - winding stem |
| EZ0035B01 | others - crown and stem gasket |
| 06Y38NGH | others - hour hand |
Caliber 1F20
