Don't Be Tied to Your Computer: This presentation clicker lets you control your slides from a distance of up to 100 ft. Feel free to roam around the office, classroom or auditorium while giving a presentation or lecture! Various Control Options: Aside from a 656ft long range red pointer, the presentation clicker is also programmed with controls including page up, page down, volume control, and full-screen. There's also a button for blacking out the screen. Quick & Easy Set Up: Our presentation clicker runs on 2 AAA batteries ( not included ). The plug-and-play USB receiver saves you from the trouble of downloading and installing any software or program. Feels Nice on the Hands: This presentation clicker features an ergonomic shape with thoughtfully designed contours that make it comfortable to hold. The size and design make it easy to store in pockets. Universal Compatibility: This presentation clicker is compatible with MacOS, Windows, Android, and Linux, as well as different presentation programs like Google Slides, Powerpoint, Prezi, iWork, and Keynote, etc ( not recommended for LED, LCD, TV screens ).