Built-in Vibrant Red Laser is twice as visible as a standard red laser, and works on any projector screen to help you focus your audience's attention Intuitive slideshow controls and a sleek, comfortable design enable you to easily navigate your presentation Dedicated volume control buttons make it easy to adjust levels on the fly Displays time and signal strength on a clear backlit LCD screen Vibration alerts silently keep you aware of the time A 50-foot range lets you present with confidence from anywhere in the room PC- and Mac-compatible, with no software to install -- everything you need is in the box