Red laser, cursor control joystick lets you use the presenter like a mouse, Backlit button controls, extended 150-foot wireless range, internal storage for wireless USB receiver, plug & Play 2.4GHz USB wireless connection. The Presenter Experts intuitive four-button design makes it easy to navigate your Keynote or PowerPoint presentation. And when you need to move your cursor, a quick flip of a button gives you full cursor control. The powerful 2.4Ghz remote resists interference and lets you control Keynote or PowerPoint from up to 150 feet (50 meters) away. The USB receiver stores inside the presenter so you wont have to worry about misplacing it. You wont have to worry about not being able to find the right remote button either, because the Kensington Presenter Expert has backlit buttons. Compatible with Windows 10, 8.1, 8, 7 and Mac OS X