The Seiko 1F20-5D80 is a watch model based on the 1F20 movement.
Parts List
| ESCW12SN01 | crystal - crystal |
| 25M20NA3 | crown |
| 0A1800N01 | case back gasket |
| 3K05A | band - leather band |
| 82820360 | others - case ring |
| A120AS | others - push pin |
| 06Y38AGH | others - hour hand |
| 0351807 | others - winding stem |
| 1F200K20XS14 | others - dial |
| 1F205D80 | others - case back |
| 1F205D807N | others - case |
| 1F209 | others - machine code |
| EZ0035B01 | others - crown and stem gasket |
| 06Y38CGM | others - minute hand |
Caliber 1F20
