uxcell Laptop 10 LED Lamp PC Flexible Gooseneck USB 2.0 Light Light weight & contains 13 LED; Standard USB 2.0 compatible with any notebook or dekstop PC that has a USB input. No external power source needed, insert it into the USB port on your Notebook or PC; Flexible gooseneck. Product Name : LED Light;USB Version : 2.0; LED Quantity : 10;Material(External) : Metal & Plastic Size : Light Head: ~3 1/4" x 1 5/8" x 1/2"(L*W*H);Gooseneck: ~11 1/2" x 3/16"(L*D) Color : Silver Tone;Total Weight : 87.5g; Package Cotent : 1 x USB 2.0 LED Light