How does the heating of side-by-side mirrors Chevrolet Aveo 2 work?

Mirrors are drying up completely within 7-10 minutes, even if it is raining. Five minutes after the power on, you can test the heat from the back of your hand to the touch. The mirrors must be at least a little warmer than the shell. They don't have to go in a couple of them. It includes heating the mirrors by heating the back glass.