Leadleds Clip Reading Light, 28 LED Book Light, USB and Battery Operated Portable Lights for Piano, Travel, E-reader & Bed Headboard (Black) The led reading light powered by USB port, available works by AC plug or 3pcs AAA batteries(batteries non-include) Features an ON/OFF button, you don't have to upplug every time, flexible neck can be bent to direct light just where you want it Gooseneck length: 11 inches, total length: 17.5 inches Humanization design, 28-LED luminescence white light suit for eye protection Great illuminating in bedroom, table, desk, office, table, desk, travel