Bluetooth pairing method:
First open the Bluetooth of the computer or other device, open the add Bluetooth device.
Then power on the mouse, and then press the "left button" + "middle button"
for 5 seconds at the same time, the red indicator light will flash slowly, indicating that the mouse enters the pairing mode.
The computer searches for the mouse and clicks on the connection.
When the mouse is successfully paired, the indicator light goes out and can be used normally