Logitech M325 Wireless Mouse Black - 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. The long battery life virtually eliminates the hassle of changing batteries. Smart sleep mode saves power, while an indicator light eliminates surprises. 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.