Improved optical technology allows mouse to track on most surfaces. No more productivity slow-downs while you wait to find a tracking surface. An ideal solution for desktop use and traveling, this wireless mouse has a micro USB receiver that can be left plugged into a laptop. DPI button allows switching between 800/1600 dpi for more precise control when you need it. Rubber grips and an ergonomic shape make the mouse comfortable to use. Connector/Port/Interface: USB Left/Right Hand Use: Left/Right Mouse Technology: Optical. Unit of Measure : Each