This foldable desk not only lifts hot portable computers off laps, but it provides a rich stereo system for the computer, or any MP3 player or gaming device. Powered by a USB connection to the computer, the 2.1-channel amplifier drives two 5-watt speakers and a 10-watt subwoofer. Two quiet, integrated fans positioned under the keyboard spin at 1,500 rpm to keep the laptop cool even with extended use. Buttons on the desk handle speaker volume and muting as well as turning the fan on and off independently. Constructed of durable, lightweight ABS, the desktop surface is angled 15°, an ideal position for typing while you are seated in bed. Folds flat for easy transportation or storage. The desk can be powered alternatively by four D batteries (not included). 14 1/2" H x 30 1/2" W x 13 1/2" D. (9 1/2 lbs.)