stardrift 7-LED USB Light Laptop Lamp with Suction Cup (black) Provides natural, non-flickering light for stress free productivity and enjoyment Flexible goose-neck design allows the user to adjust the lamp to various heights and positions Powered by USB port Neck length:10 inch,light length:3.9 inch,suction diameter:2.75 inch 7 LED USB Light with Suction Cup style, you can put it steady on the desk or other smooth surface