*DUAL MODE BLUETOOTH-compatible MOUSE Mode A: Insert the USB receiver into the USB port and switch the mouse switch to 2.4G. Mode B: Switch the mouse switch to Bluetooth-compatible, press the pairing button for 2-3 seconds, the computer Bluetooth-compatible will find the mouse and pair it. *3 Kind Of DPI Adjustable 800/1200/1600 DPI resolutions Default 1600. Easily adjust DPI button to instantly match mouse speed to different working scenarios with DPI button on the top of the wireless mouse. *Cordless mute Mouse Wireless transmission technology provides a powerful and reliable connection up to 10m. the mouse features 90% noise reduction, help you concentrate on your work, study without disturbing others besides you. Note: dpi button is non-silent. *Widely Compatibility The mouse is well compatible with Macbook, PC, iPad, computer and mobile phone. 2.4G can be used with laptops and any devices with USB ports. [Note: The USB receiver is stored in the battery box of the mouse.