Radio Frequency Red Laser Pointer,Page up/down,wireless mouse , ... in flash memory Function: *Technology:Radio Frequency *Red Laser Pointer,Page up/down ,wireless mouse ,wireless keyboard ... memory optional(64MB-16GB)*Contral distance :15m*Laser distance :200m*Laser output:<1mw(classll),<5mw(classlll)*Transmitter size : ... ,Me,2000,XP,Mac OS,Linux, Vista 2012 hot selling wireless presenter with red laser