COMPACT & PORTABLE: Handy, compact, portable Book Light runs on 2 Energizer CR2032 Batteries (included). You'll have long-lasting reading time, and can take this compact book light anywhere with you. Handy to have in power outages!ADVANCED LED TECHNOLOGY: Re-creates natural reading conditions with advanced LED technology. This type of light provides plenty of visibility for reading, but is still easy on the eyes.FLEXIBLE NECK & BUILT-IN CLIP: Compact design with flexible and collapsible neck and built-in clip make a perfect travel or camping companion or copilot. Over-sized spring clip easily attaches to books, Kindles, clipboards, visors, etcOPTIMAL BEAM SIZE: Delivers a beam broad enough to see, yet narrow enough for privacy. Great for reading your book or kindle on planes, in cars, or in a tent on a camping trip.LONG-LASTING RUN TIME: Has a run-time of up to 25 hours, perfect for those books you just can’t put down. The long-lasting power makes this light a go-to when you want to dive into a good book, even during a long power outage.