Optical Sensing TechnologyScans the desktop at up to 28 inches per second, providing one of the most accurate input devices available on the market today. Automatic Wireless SynchronizationInstallation is a snap with our patented automatic wireless synchronization. Simply install the batteries, plug the Nano receiver into an available USB port and your mouse is automatically detected and synchronized with your computer.2.4 GHz Wireless ConnectivityOur state of the art design utilizes 2.4 GHz Wireless Technology to provide an improved range of operation up to 30 feet away. Includes a Nano dongle that fits flush in an available USB Port when traveling. Scalable DPI SwitchCustomize the speed of your mouse on the fly, with our one-touch DPI switch that allows you to change the sensitivity of the mouse with a selection of 800/1200/1600 DPI.