Easy to Set Up & Use No software to install, no feature setup required. Compact Easy to carry along & use on small work spaces Comfortable in Either Hand Use your mouse with your left or right hand—ambidextrous design makes it comfortable either way. Scroll Wheel Move through your documents quickly without having to click on the on-screen scroll bar. Optical Technology High Performance Optical Technology—no mouse ball. 800 dpi optical sensor delivers greater accuracy & control. Device Stage Quickly & easily access common tasks, including product information, registration, settings & more for popular devices such as cell phones, cameras, printers, & mouse, keyboard & webcam products. 3-Button Mouse Get quick access to the media, programs, & files you use most often with customizable buttons.