Eye Care and Endless Configurations: Comfortable lights without ghosting can avoid eye fatigue. The LED desk lamp can be folded into countless different configurations, with three 360 degree hinges and a swivel head. With its clean lines and aluminum alloy construction, the light is both sculptural and useful. Easy Control: Adjustable lamp arm lets you direct light where you need it . It can be hung anywhere with the included 3M adhesive pad to be a wall lamp. Energy efficient: Press the power button to adjust the light between 3 dimmer levels. It only uses 3 watts of power but generates 150 lumens of light. Made with long-lasting LED bulbs that guarantee thousands of hours of life. USB Charging: Built-in rechargeable battery and USB port made the lamp cordless and portable. Convenient to charge via micro USB charging port from DC adapter or even power bank. Once fully charged, it runs for up to 4 hours. NOTE: For best performance, please unplug the cable between charges. Excessive bending and bending of the lamp can loosen the hinges over time.