... -in flash memory (optional). Technology:Radio frequencyFuntions:Green laser pointer,page up and down,blank screen , built in flash memory optional(64MB ... -16GB)Contronl distance:15mLaser distance:uo to 1000mLaser output:<1mw(ClassII),<5mw(ClassIII).Laser ... : Windows98,Se,Me,2000,XP,MacOS,Linux,Vista. RC Green laser pointer