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. Diffuser provides smooth, uniform lighting. Clips to most easels, desks and shelves with sturdy spring-loaded clip. Long shade offers 12.6 inches of illumination. Extra long, flexible 16.6 inches neck and sturdy clip. On/Off switch on cord.