The LED Bookmark Lite is an exciting new booklight using the latest LED technology. The dual, super bright cool white LED lights are fully adjustable on a the metal gooseneck arm. The LED lights retract into the body when not in use. The LED Bookmark Lite easily attaches to the spine of any hardcover or paperback book. Keep it attached to your book when you are finished reading and use it as a page marker. Heat-free LEDs last 100,000 hours. Runs on 3 "AAA" batteries (not included) and provides 30 hours of continuous reading.