1: Directly plug the USB lamp into the USB port on your notebook or PC
2: No external power needed. Just easily turn on your notebook or PC to power it
3: USB desk lamp with switch
4: Gently adjust the flexible neck of USB LED light to position the fly light anyway you wish
5: Power saving design comes with reliable LED light, LED light is rated to average 10, 000 hours of use
6: Durable featherweight construction and small enough for taking anywhere conveniently, it fits into your case as easy as it fits your style
7: Work voltage: USB DC 5V