... Frequency Red Laser Pointer,Page up/down,wireless mouse ,wireless keyboard shortcut key Built in flash memory ... Radio Frequency *Red Laser Pointer,Page up/down ,wireless mouse ,wireless keyboard shortcut key *Built in flash memory optional(64MB ... :11.9*3.1*1.7cm*USB Plug and play,no driver required. *Battery:AAA*2PCS *Operating ... OS,Linux, Vista 2012 hot selling wireless presenter with red laser