Description: Bring colors and texts to life with PureOptics LED lighting technology: experience improved clarity, higher contrast, and true, brilliant colors. With a 5 watt, 235 lumen output that is ideal for mid-size to large desks and work spaces, the lamps simulation of natural daylight reduces eye fatigue. Refreshing white light is flicker-free and glare-free and can be easily adjusted to one of four dimmable lighting levels for individual preference. Uses 85% less energy than comparable incandescent desk lamps, and also features an integrated USB power port for easy device charging. For convenience and emergency situations, lamp head detaches for compact, portable lighting.