Add a little sci-fi fun to your nighttime reading with this nifty book light! Touch the button to activate the "robotic" arm and put bright LED light right at your fingertips. Jumbo clip fastens securely to any book or magazine; small and lightweight enough to fit in pocket or purse. Plastic and iron. Three AG13 button cell batteries included. 6 1/2" x 1 3/8" x 3" high.