RF Laser Pointer with mouse/keyboard function radio frequency Function: laser pointer, page up/down, blank ... screen, play slide RF Laser Pointer with mouse/keyboard function Technology: radio frequencyFunction: laser pointer, page up/down, blank ... , ME, 2000, XP, Mac OS, Linux and VistaSize: Transmitter 92*27*10mm Receiver 85*27*10mm RF Laser Pointer with mouse/keyboard function