Illuminate your own Manuscripts! LED Book or Computer Light Clips On or Stands on its Own! This beautifully styled and compact book light does its job very very well! Read or work anywherewithout disturbing others. It works fine with laptops and it s a great take along for those late night airplane trips! Enjoy Datexx s Tru-Brite LED technology that offers even white light bright enough to read or even operate a computer. What s more this LED floods the page or keyboard without the hot spots found in conventional LED devices. With a built-in power saver just 3 AAA batteries (not included) can last as long as 12 continuous hours or 6-8 months with intermittent use. The LED light bulb probably will never need replacing because it s rated at 100 000 hours.