Led Book Light 2-Pack (Blue and Black) Its multiple uses make the LED Book Light perfect for the home, office, computer work or traveling A sturdy, no-slip clip holds tight to materials  the light also has a base to stand on a tabletop The strong yet flexible neck, the LED Book Light holds position wherever you need light. Use with the 3 AAA batteries (incl) or plug directly into your computer using the USB cord (incl) 6 super bright LEDs to brighten your books and magazines