Designed for how you use the Web, our newest micro-precise scrolling makes reading your Facebook®, shopping online or scrolling through Google® searches easier. Plus, tilting the wheel moves you backward or forward on the Web. You get the reliability of a cord with wireless convenience and freedom—fast data transmission and virtually no delays or dropouts. You pop the tiny Logitech Unifying receiver in your notebook and leave it there. You can even add more devices. Plug it. Forget it. Add to it. Based on the best-selling shape in the world, the contoured shape with textured rubber grips keeps your hand happy—even after long hours.