Ultra-slim and Portable: The curved mini B1uetooth 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 Cool Switch: When the mouse power is turned on, press the B1uetooth 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) Touch Ccroll Bar: Innovative full scroll plane lets you scroll both vertically, intuitive navigation. (Note: Can't scroll left and right) Best Compatible B1uetooth 4.0 Chip: Add a mouse to the B1uetooth device and select BLE4.0 MOUSE to successfully connect. Connect to PC, Mac MacBook pro / MacBook air Auto Sleep Mode: The mouse will fall asleep after 10 minutes no-operation, 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, This product does not include a USB B1uetooth adapter, if you need to use this product on a desktop computer without B1uetooth, please bring your own USB B1uetooth adapter ARC Mouse