Reduce your eyestrain and increase your visual comfort with this OttLite Adapt Lamp. With three lighting settings and a USB charging port, this lamp is the perfect addition to your desk or side table. OttLite proudly utilizes our exclusive ClearSun LED technology in many of our lamps, to bring you illumination like no other. Closer to the spectral output of the sun than any other light available. Details: Matte black finish and brushed brassHeight adjusts from 7" to 22" Base diameter is 6" Maximum lumen output of 410 Includes 5V, 2.1A USB port to fully charge smart phones and tablets Proprietary, exclusive OttLite ClearSun™ LED – reduces eyestrain by 51% Provides smooth, uniform light with Color Rendering Index (CRI) of 97 3 color temperature modes Memory feature remembers your last setting for color temp 3 brightness settings with touch controls Metal lamp with two turnkey adjustments and pivoting shade Energy efficient LEDs rated to last up to 40,000 hours