... shortcut key Built in flash memory Function: *Technology:Radio Frequency *Red Laser Pointer,Page up/down ,wireless mouse ,wireless keyboard shortcut key ... in flash memory optional(64MB-16GB)*Contral distance :15m*Laser distance :200m*Laser output:<1mw(classll),<5mw(classlll)*Transmitter size :11.9 ... ,Mac OS,Linux, Vista 2012 hot selling wireless presenter with red laser