it is all in the wrist. you have to spin it around as fast/slow as you can to mix something e.g. yogurt with honey manually.
Mainly to whisk eggs if you don't have an electric whisk
In general, a hand-held electric whisk is to be held with the rotating-blades vertically downward, inside the liquid that is to be whisked. The "On" button is to be pressed, activating the blades....
I usually use it to whisk eggs or to mix cake and cupcake batter
You can use a hand whisk it just takes more effort.