Reduces key-click sounds with at least 90%  10m wireless range (2.4 GHz)  Speed select button (1000/1400/1800 DPI)  Storable micro USB receiver  On/off power switch  For left and right hand use  Connectivity  Connection type wireless  Bluetooth no  Wireless protocols RF 2.4GHz  Wireless range 10 m  Receiver included yes  USB version 2.0  Connector type USB