Laser pointer Big area for logo printing Transmitter and receiver are integrated for your easy carry RF technology Page up/down Power point display and blank screen Built-in flash memory: 1GB, 2GB, 4GB and 8GB Control distance: 15m/49ft Dimension: 8.7 x 3.35 x 0.9cm Battery: CR2032 x 1 USB plug-and-play, no driver required Operating systems: Microsoft Windows 98, 2000, Me, XP, Vista, Linux, and Mac, Windows 7 Patent number: ZL 2006 3 0153839.5 CE and FCC approval, RoHS compliant