Plug into any USB port. Switch convenient to use. Great for the notebook traveler. Smooth design for maximum coverage. Portable and easy to install and store. Safety power source with DC 5V,power saving. Flexible metal wire for any-angle adjustment. Eye sight protection, long life of 50.000 hours. 18 LED lights for maximum illumination, super bright. Multi-power sources, can be powered by USB on laptop, HUB. Can be used for home, computer lighting, study or office lighting. You can connect with your notebook, computer or other USB port equipments. Super bright 18 LED Lamps, Bright Pure white color but soft light, quick light-on with out blinking. Specifications: Plug Type: USB LED Number: 18 LED Color: White, Black Power: USB DC 5V Consumption: 1.5W Material: ABS + electronic component Working Humidity: 0~70% Working Temperature: -5~50 degree Celsius Size: 27CM Package Included: 1 x USB 18 LED Light