Read at night on a plane, train, in the car, or in bed without bothering anyone when you use the Battery-Powered Robotic LED BookLight. This booklight features an LED bulb, which offers light that"s bright enough for reading comfortably without straining your eyes or disturbing others. With one press of a button, the light arm will automatically open. Once open, the adjustable light head can easily be moved and positioned so you can point the light exactly where you need it most. The light operates using 3 LR44 batteries, making it easily portable and ideal for use at home or while traveling.