Proprietary exclusive OttLite ClearSun LED reduces eyestrain by 51%. Provides smooth, uniform light with Color Rendering Index (CRI) of 95+ for excellent color accuracy. Specially designed to help you see clearly and comfortably. Touch-activated controls and smart memory feature to remember most recent brightness setting. Flexible, rubberized neck. Height adjusts from 49 to 71 inches. Base measures 10 3/8 x 8 inches.