Funtions:Laser pointer,page up and down,blank screen,Esc,power on/off. ... (64MB-16GB) Con Technology:Radio Frequency.Funtions:Laser pointer,page up and down,blank screen,Esc,power on/off.Built ... ),<5mw(ClassIII).Laser wavelength:650nm.Material: plastic.Dimension:11.2*2.6*1.4cmBattery:AAA*2pcsUSB plug and play,no driver ... system: Windows98,Se,Me,2000,XP,MacOS,Linux,Vista. 2.4G wireless presenter