The Seiko 1F20-F050 is a watch model based on the 1F20 movement.
Parts List
| 180W26JK | crystal |
| 180W26JK01 | crystal |
| 6K35BFTJW0 | crown - crown titan |
| 6K35BFTJ | crown |
| FH2130B01 | case back gasket - case back gasket |
| EA0040B0 | case back gasket |
| 86581700 | crystal gasket |
| 86581701 | crystal gasket |
| 4B92JB | band |
| A120BS | others - push pin (for lb) |
| 1F20F050 | others - case back |
| 1F20F050WFA | others - case |
| 1F20F090XN14 | others - dial |
| 1F20F090XS14 | others - dial |
| 82820780 | others - case ring |
| 0351807 | others - winding stem |
| EA0040B0A | others - crown and stem gasket |
| 07Y48NGM | others - minute hand |
| 07Y48NGH | others - hour hand |
Caliber 1F20
