Enjoy a healthier way to see with the OttLite ClearSun LED - an exclusive technology that helps to dramatically reduce eyestrain and glare by up to 51%. Provides smooth, uniform light with Color Rendering Index (CRI) of 95. Three brightness settings - up to 450 lumens with touch activated control. Base glows in the color of your choice or cycles continuously through the entire spectrum. Adjustable arm and shade for effortless positioning of light. Includes 5V, 2.1A USB port - fully charges tablets, phones and more. Exclusive energy efficient ClearSun LEDs rated to last up to 40,000 hours.