Experience new levels of productivity with this 2.4 GHz Wireless Desktop Mouse This level of RF offers you up to 30 feet of wireless freedom and eliminates the constraints wired mice often cause Its optical sensor tracking method lets you work on virtually any surface with beter speed and accuracy In addition, the mouse includes three distinct levels of DPi - 800, 1200 and 1600 - for precise targeting, quick response or fast maneuvers Easily switch between resoultions with the conveniently located located on the top of the mouse