1. Please make sure the ON/OFF button on the back of the mirror is in the ON position before you touch the sensor switch on the surface.
2. Press and hold the circle for 2-3 seconds to change the brightness of the light according to your needs.
Step 1 : Put 3- AAA batteries (not included) in or plug the USB cable tightly into the USB port in the mirror.
Step 2 : Firstly, please turn on the switch on the back of the mirror, touch the sensor switch (the big circle) and the mirror will light up.
Step 3 : Secondly, touch and hold the sensor switch for several seconds to change the brightness of the light gradually. Release your finger when the brightness of the light is right for you.