Notice: 1. The mouse must be bent to the correct position, otherwise it cannot be turned on. 2. It is recommended to use a new battery for power supply. If the voltage is too low, the touch bar scrolls abnormally or does not work. *Mouse with Touch Bar consumes more power than normal mouse* How to use it? 1. Insert the battery into the mouse. 2. Bend the mouse, when you hear a sound, it means the mouse is bent to the correct position. 3. Plug in the USB receiver to use Product parameters: Connection Type: 2.4Ghz Wireless with USB Receiver Wireless distance: 10m Product size: 133*55*12mm Weight: 75±5g Resolution: 1600dpi Battery: 2*AAA dry battery (not included) Material: ABS plastic and silicone System requirements: Windows 7/8/10/XP/Vista, iOS, MAC OS, Android