... laser pointer presenter wiht flash memory Function:1.laser pointer2.page up/down3.mouse move4.blank screen5.play slide, Esc Feature ... .Max output: <1mW or <5mW8.Battery: CR2032X19.Dimension:87X32X8mm10.Operating system: Windows 98, Se, Me,2000, XP, Mac OS, Linux,Vista11 ... /64/128/256/512M/1G/2G) 2 in 1 mini wireless presenter laser pointer with flash memory