The new EVQ P0E07K can be seen in the image.

Using your soldering Iron, de-solder the old switch by placing tweezers under the switch for leverage whilst heating the pins.

You may find it easier to wriggle the switch out one pin at a time, rather than heating both pins at once.

De-solder the holes with the solder pump or wick.

Insert the new buttons and solder, ensuring they are flush with the PCB.

Re-assemble the mouse carefully ensuring the power switch, lens, antenna and mouse wheel are in the correct locations.

Test the switch works acceptably before screwing the unit back together.