R800 2.4G wireless green light laser pointer presenter remote control for ppt speech meetingfeatures: it suit windows xp, windows vista and windows 7, window 8usb interface receiverred laser pen: in most background can be easily seenuse distance for as long as 15 meters without interact with the audiencelcd battery power screenintuition type slide control button: can make you survey presentation materialbutton a touch vestedthe design of the exterior of the smooth feel perfect achievement specifications: model: r800interface: usbconnectivity: wirelesspower: 5mw, 2pcs aaa batteries battery not included laser color: greenmaterial: plasticsize:13.5Cm x 3.8Cm/5.27 X 1.48In approx color: black package included: 1 x r800 laser pointer 1 x usb receiver