Logitech Wireless Mouse M325s is a better mix of precision & comfort with designed-for-Web scrolling. Designed for how you use the Web, our newest micro-precise scrolling makes reading your Facebook, shopping Amazon or scrolling through Google searches easier. Plus, tilting the wheel left or right moves you backward or forward on the Web. Its feel-good, contoured shape & textured rubber grips help keep your hand happy-even after long hours. With up to 18 months of battery life, it virtually eliminates the hassle of changing batteries. The tiny USB receiver stays in your laptop. Plus, you'll enjoy precise clicking & pointing while navigating your favorite websites thanks to Logitech Advanced Tracking Technology. Connector / Port / Interface: USB; Left / Right Hand Use: Left / Right; Mouse Technology: Optical; Wired / Wireless: Wireless.