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.