Ideall Mini E-Book Tablet LED Reader Lighting Clip On Book Reading Lamp Laptop Clip Light, Hand Held Outdoor Emergency Lamp High Power 4 LED plates and specialty light cover giving even spray of illumination With clip can easy attached on any notebooks,E-books,Books or other devices Light weight can easy to carry on while traveling and it can be an emergency flash light by hand held. Input Voltage: Battery AAA Akaline