Lights up automatically as your face approaches. Its tru-lux light system simulates natural sunlight, allowing you to see full color variation, so you'll know when your makeup is color-correct and flawless. Touch-control brightness bar gives you fast, intuitive control over a continuous range of brightness. Long-lasting surgical-grade LEDs won't burn out or diminish even after years of use. Cordless and rechargeable – one charge lasts up to 5 weeks. 5x magnification is ideal for providing exceptional detail while still allowing you to see your entire face at once.