Clip-On Led Book Light. Enjoy your favorite night-time novel without disturbing others around you! Super-bright LED light clips instantly onto any book; flexible neck puts light right where you need it. Ideal for bedtime reading, late-night study, or travel; also great for close-up craft work. Plastic case included. PVC; iron wire. Three AG13 button cell batteries included. 1 3/4" x 1 1/4" x 1 1/8" high.