The Amble Designer modern desk lamp has a built in USB port for charge devices on your desktop and a rechargeable lithium battery that offers up to 6 hours of power on the go. With it's 3 position base you can rock it back and fourth to cast different spheres of light each time it's moved. It also has a gravity driven shade around the LED that automatically moves to eliminate glare and a built in dimmer and occupancy sensor that will shut off after 30 minutes of inactivity. It can be ordered in different colors and is backed by a 15 year structural warranty and a 1 year warranty on the LED/Transformer.