uxcell Laptop PC 0.25W Flexible Neck USB LED Lamp Light Black Product Name : USB LED Light; 0.25W sing white LED light Compatible with USB 1.1 and 2.0 port. Flexible gooseneck to any angle you want; Flexible gooseneck to any angle you want. No external power supply required,insert in switch on and switch off; Input Voltage : DC 5V Power : 0.25W; Light Head Dia : 1.3cm / 0.5";Total Length : 43cm / 16.9"; Luminous Flux : 25lm Material : Metal;Color : Black; Net Weight : 56g;Package Content : 1 x USB LED Light