Sensor on/off: The mirror automatically lights up as your face approaches the mirror-no need to touch any buttons. Color accurate: The mirror's surgical-grade LEDs emit light that closely simulates natural sunlight and its full color spectrum. Bright: At 600 lux, the mirror's light system is more than twice as bright as the next best. Never change a bulb: The mirror's LED's are rated to perform like new after 40,000 hours-that's an hour a day, every day, for more than 100 years. 5.