It 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 don't wander too far. A storable plug-and-play wireless receiver makes it simple to get started. There's no software to install.