Note: 1.This is a bluetooth mouse without USB Dongle Receiver. 2.The mouse must be bent to the right position, otherwise it can not turn on . 3. If you are prompted to enter a pin code when you turn on the Arc Bluetooth mouse, it may be because of a conflict between two similar Bluetooth mice. At this time, you only need to re-pair the Bluetooth mouse (press and hold the left and right buttons of the mouse for 6 seconds to enter the pairing mode). 4. 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. *A mouse with a touch bar consumes more power than a normal mouse.* How to use it? 1. Insert the battery into the mouse. 2. Bent the mouse, when you hear a sound,it means the mouse is bent into correct position. 3. Press the left and right buttons simultaneously for 6 seconds, blue light flickering from the gap of the right button. 4. Open your computer Setting-Device- add bluetooth mouse 5. The computer will search our mouse . After it find out our mouse,click to connection ,then the mouse can work. Product parameters: -Connection Type: Bluetooth 4.0 -Wireless distance: 10-15m -Product Size:133*55*12mm -Weight: 75±5g -Resolution: 1200dpi -Operating cycles: 1,000,000 cycles -Battery:2*AAA dry battery(Not included) -Material: ABS Plastic and silicon -System requirement: Windows 7/8/10/XP/Vista, iOS, MAC OS, Android