The Seiko 1F20-HAA0 is a watch model based on the 1F20 movement.
Parts List
| 0F220BA1S | case back gasket - case back gasket |
| AC004BA11 | case back gasket - crown and stem gasket |
| WB33BW | band - band |
| A170AS | others - push pin |
Caliber 1F20
Seiko 1F20-HAA0 Watch Guide