Features: Directly plug the USB 13 LED light into the USB port on your laptop or computer. Plug and Play. Small enough to take anywhere. USB bus powered, no external adapter or batteries needed. Bright 13 LED. Gently adjust the flexible stainless steel neck of USB LED light to position the fly light anyway you wish. Power Consumption: 5V. Very good for using in dark without disturbing your roommates. Package Included: 1 x USB 13 LED Light