Instead of having wireless mice where you use a scroll pad or a joystick to move the cursor, you move the device itself to move the on-screen cursor. It's got a range of up to thirty feet, and algorithms in place that eliminate the cursor shaking with tiny movements from your hand (hold your hand straight out and perfectly still. It's absolutely impossible not to twitch just a little bit, and that would be extremely annoying while using a motion-sensitive mouse). It features an intuitive volume control button: Push and hold the volume button, and wave the mouse to the left to turn the volume down and wave it to the right to turn the volume up. Plus, the functions I like best: Programmable gesture recognition. Hold the gesture button and wave the mouse in the gesture that you programmed in, and it'll execute the command you've set to that gesture (for example, hold the gesture button and wave the mouse in a circle to open iTunes, or whatever). Now that's a cool mouse. However, it's a little bit pricey at $149. Maybe I'll wait on it for a while.