2.4GHz Wireless Connectivity: Extend the precise control range up to 10m and 1600dpi. The receiver is hidden in the battery compartment, small and takes up little space. Silent Click: Special silent design for the left and right buttons, you can use it in your office to create an atmosphere quiet desktop. Power saving mode: Extremely low power consumption. It automatically enters sleep mode to save battery when the mouse is idle after 10 minutes. Press any key to wake it up. Easy to use: No additional software required, just plug and play. Note: Only one AA battery is required for power supply (not included).