I've owned 3 other remote clickers, and this one is the best by far. For starters, it uses AAA batteries which are easy to procure and replace, whereas other models use those little quarter-size batteries that require a special trip to Radio Shack to buy. Plus, AAA's hold more juice to begin with, AND this clicker has an on/off switch, whereas others turn off on their own after time without use, meaning after they drain the battery! The transmitter on this clicker has plenty of power to reach the back of the computer/USB receiver stub from long distances, whereas others require the presenter to be close to the computer because they transmit a weak signal. The form factor of this one is perfect in your hand and the buttons are easily used, even by people unfamilar with it -- it's very intuitive. It has a very useful timer/clock that allows me to watch how much time I have left to finish my presentation -- it will also vibrate in my hand with 5 minutes to go, 2 minutes to go, and when my time is up. It allows me to add more time on the fly. This remote clicker is absolutely perfect in every way, and I can't tell you how many colleagues have purchased one after they tried mine. Don't waste your money on anything else -- they really got it right in all the human factors/UI aspects and all the engineering aspects when they made this.