Cool Switch: When the mouse power is turned on, press the controller to pair it(Note: Before using the mouse, you need to bend the mouse to turn on the power. If the mouse is flat, the power is turned off and cannot be used.)Ultraslim and Portable: The curved mini mouse is lightweight and easy to carry, goes anywhere without the weight or bulk of traditional mice. More importantly, you can fold it into a flat shape and easily fit it into your back pocket or bag for easy travel.Touch Ccroll Bar: Innovative full scroll plane lets you scroll both vertically, intuitive navigation. (Note: Can't scroll left and right)Best Compatible 4.0 Chip: Add a mouse to the device and select the corresponding Bluetooth to successfully connect. Connect to PC, Mac MacBook pro MacBook air.Auto Sleep Mode: The mouse will fall asleep after 10 minutes nooperation, it can be waken up by clicking any button.Compatibility: The mouse needs two pcs 1.5V AAA dry batteries to power it( included in the package).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.