The Seiko 1F20-5240 is a watch model based on the 1F20 movement.
Parts List
| RE6A29JN02 | crystal - crystal |
| 6M35G3SNS0 | crown - crown |
| 0F170BA1S | case back gasket - case back gasket |
| WT80AW | band - leather band |
| W266AB | band - band |
| 1CA040A7BNS | others - hour hand |
| 2CA050A5BNS | others - minute hand |
| 2CA060A5BNS | others - minute hand |
| 1CA032A7BNS | others - hour hand |
| 81190075 | others - bracelet fixing pipe |
| 1F2052408XA | others - case |
| 82845370 | others - case ring |
| 81606899 | others - bracelet fixing pin |
| 1F205240 | others - case back |
| 1F200540XS13 | others - dial |
| 1F200550XB15 | others - dial |
| 1F205 | others - machine code |
| DZ0040B01 | others - crown and stem gasket |
| 0351807 | others - winding stem |
Caliber 1F20
