An ideal option for all task lighting needs with the lasting power of LED. Three-point adjustable twin arm for maximum reach. USB charging port hidden on base for conveniently charging smart phones, tablets and other devices. Built-in diffuser distributes light evenly and helps eliminate glare. 3 watt surface-mount LEDs have an average rated life of 20,000 hours. On\/off switch conveniently located on base. Dome style base measures 5 1\/4" in diameter.