Compact and lightweight - only 1.0 oz so easily fits in pocket or carryin * Universal compatibility - works with Windows 7, Vista, XP, Mac OS with one USB Port * Presentation Functions - Page Up, Page Down, Mouse Arrow, Right Click, Left Click, Darken Screen, and Resume Screen * RF 2.4Ghz Wireless gives you freedom of movement of 100 ft. - no need to aim the receiver * Runs on two AAA batteries, and measures 1.6 x 0.7 x 4.5 inches