Product details of Paperback LED Panel Light Book Reading Lamp FEATURES: Advanced LED adopted. Put the clear panel on your pages, and the panel will give out light for your reading. Unique light barriers can work well to focus all light on pages to ensure brightness and not to disturb others. Extremely lightweight and compact. Powered by 3 x AAA batteries. Low power consumption. 3 batteries can ensure over 50 hours' continuous use. Ideal book reading light for all. Can also works as a book mark.size: 12cm x 17cm