The Lenovo Essential USB Mouse is more than your basic mouse. It features an easy plug-and-play connection to PCs with USB cord. The ergonomic full-size design provides comfortable grip for all day comfort. A high-resolution, 1600 dpi optical sensor ensures you'll be smoothly gliding from window-to-window. It features full-size mouse for better grip, wired USB connection, high resolution at 1600 DPI, ambidextrous design, and full-size mouse for better