The ideal paperback book light Patented LightWedge® technology directs light only onto the page you are reading, with no light escaping to bother someone sleeping next to you. The LightWedge Paperback is designed to fit mass market paperback books. Whether reading in bed, reading on a plane, or reading in a car, this paperback book light is the perfect accessory for all readers and an ideal gift for travelers. Patented LightWedge technology directs light only onto the page Smaller size is ideal for smaller, "mass market" paperback books Page-sized, acrylic lens lays flat on the page you are reading Perfect travel accessory for readers 2 bright LEDs illuminate books discreetly in a dark room 40 hours of light from 4 AAA batteries (not included) Paperback Measures a compact 7.4" x 5.5" and weighs only 6.5 oz. with batteries. Hardcover Measures 6.75" x 9.25" and weighs only 8.5 oz. with batteries.