Logitech Professional Presenter R800 gives you powerful control for high-impact presentations. The brilliant green laser pointer is easy to see, even on LCD and plasma displays and in brightly lit rooms. With a range of up to 100 feet (30 meters), you can enjoy the freedom to move around the room and mingle with your audience for greater impact. A reception-level indicator ensures you dont wander too far. A storable plug-and-play wireless receiver makes it simple to get started - just plug the receiver into a USB port and use it right away. Theres no software to install. When youre through, the receiver stores inside the presenter to make packing up easy