Read at night on a plane, a bus or in the car without bothering anyone. This LED light is enough to be able to read comfortably without straining your eyes or disturbing others. With one press of a button, the light arem will automatically open. It's adjustable light head allows you to position the light right where you need it. It's also battery powered which makes it an ideal traveling accessory. Uses 3 AG13 Button Cell 1.5V Batteries INCLUDED. Keep batteries away from children as they are small objects and could be ingested.