Tru-lux light system: At 800 lux and with a color rendering index (CRI) of 95, the tru-lux light system is more than twice as bright and more closely simulates natural sunlight than the next best. Sensor on/off: Automatically lights up as your face approaches the mirror & ndash no need to touch any buttons. Touch pad: Use to adjust the mirror's brightness between 100 and 800 lux. Go cord-free!: No messy cords to take up space on your bathroom countertop or vanity. Rechargeable: Includes & nb.