Proprietary exclusive OttLite ClearSun LED reduces eyestrain by 51%. Provides smooth, uniform light with Color Rendering Index (CRI) of 95+ for excellent color accuracy. Dimmable with touch controls. 3 color temperature modes (warm white, bright white and ClearSun natural daylight). Folds down when not in use. Sleek aluminum arm and shade adjust to deliver illumination where you need it. Height adjusts from 11 to 22 inches with two points of articulation.