Easy to use on the go. This affordable, compact mouse with Microsoft Optical technology is an ideal companion for on-the-go notebooks where work space is at a premium. It delivers precise cursor control on a wide variety of surfaces, & is comfortable in either h&. Easy to Set Up & Use No software to install, no feature setup required. Comfortable in Either Hand Use your mouse with your left or right hand—ambidextrous design makes it comfortable either way. Compact Easy to carry along & use on small work spaces. Optical Technology High Performance Optical Technology—no mouse ball. 800 dpi optical sensor delivers greater accuracy & control. Scroll Wheel Move through your documents quickly without having to click on the on-screen scroll bar. 3-Button Mouse Get quick access to the media, programs, & files you use most often with customizable buttons.