Microspeed Liberator KB-200 Wireless Infrared Keyboard with Trackball The MicroSpeed Liberator is a compact infrared keyboard with full 104-key functionality. Designed for use on the desktop, contoured to fit in your lap or in your hands, the Liberator includes three transmitters for a wide angle IR range. The Liberator has a built-in trackball and mouse buttons to give you control of all your typing, drop, drag and scrolling needs. This product's keyboard and mouse connectors plug easily into any existing PC keyboard and mouse port  NO special software is needed, and the IR receiver unit attaches to any surface. The Liberator, powered by 4-AA batteries, delivers twice the battery life of other keyboard designs, and offers automatic sleep and wake-up modes.