Overview: Light up your notebook anywhere you wish. Simply plug the USB (Universal Serial Bus) LED Light into any available USB (Universal Serial Bus) port on your Laptop or PC. No external power supply is needed. Switchless light remains on until it is unplugged or computer is powered off. Gently adjust the flexible neck to position the light any way you wish. Energy-efficient LED light is rated for 8, 000 hours of use. Power waste below 40 m A. Durable, featherweight construction makes it easy to carry around with you.3-LED lights create a bright & large working area. Use the adjustable gooseneck to position the light with ease, the gooseneck is about 30cm in lenghth, long enough for adjusting to light your pc. High-bright white LED can ensures easy & clear use at night. Specification: Weight Approx:44.7g Size Approx:42.5 x 2.4 x 1.2