Experience new levels of productivity with the Adesso iMouse S200 Bluetooth Ergo Mouse. This advanced Bluetooth mouse offers you 30 feet of wireless freedom and eliminates the constraints wired mice often cause. Its optical sensor tracking method lets you work on any surface with better speed and accuracy. In addition the mouse includes three distinct levels of DPI resolution (1000/ 1500/ 2000) for precise targeting (1000 DPI) quick response (1500 DPI) or fast maneuvers (2000 DPI). Easily switch between these DPI resolutions with the DPI Switch button located on the top of mouse. All these features along with its ergonomic design provide great control response and comfort with minimal hand movement. The iMouse S200B’s ergonomic design provides a comfortable grip and eliminates hand strain while giving great cursor control. Use the battery-saving on/off power switch on the mouse base to extend battery life. Two Internet navigational buttons back and forward are conveniently located on the left side of mouse to provide you with Internet browser control with minimal hand movement.