Wireless mouse delivers a better mix of precision & comfort with designed-for-web scrolling. With advanced optical tracking, 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. Designed to improve your online experience, the wheel also helps perfect scrolling when you're using other applications, such as Microsoft Office or Adobe PDF. Wireless Mouse M325 features a contoured shape & textured rubber grips. With up to 18 months of battery life, it virtually eliminates the hassle of changing batteries. Smart sleep mode saves power while an indicator light eliminates surprises. Tiny, unifying nano-receiver stays in your laptop & gives you a reliable connection using advanced 2.4 GHz wireless technology with virtually no delays or dropouts. The accommodating design lets you easily add up to five more compatible wireless devices to the same receiver.