Keyspan by Tripp Lite PR-PRO3 Presentation Remote Pro Wireless w Laser, Mouse, Audio Controls Wireless presentation remote designed for PowerPoint, Keynote and other presentation programs that use PowerPoint keystrokes No software to installsimply plug the receiver into a computer and the remote is ready to use in seconds Advanced controls plus two-button mouse capabilities and brilliant laser pointer put you in complete charge of your presentation 100-foot range gives you freedom to roam; remote even works through walls and furniture Powered by two standard AAA batteries (included)