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. 3 brightness settings with touch-activated control. 13.5 inch flexible, rubberized neck allows you to direct light where you need it most. Height adjusts from 8 to 19 inches. Base measures 6.25 x 6.25 inches.