Product Features: 1. Ultra-thin design, fashionable and convenient; 2. Strong anti-interference capability, long working distance up to 10M; 3. Intelligent energy-saving red light design, long standby time; 4. The scroll wheel zips you through the web with ease and speed. Note: 1. Do not disassemble the product yourself. 2. Avoid dropping it. 3. Avoid water. 2.4G Connection: When Using: 1. Insert the USB receiver located on the bottom of the mouse into your computer. 2. Turn on the power switch on the bottom of the mouse, and you can use it normally! (Note: Follow this order for quick pairing). Bluetooth Usage: 1. Turn the switch to the ON position, turn on Bluetooth on your device, and click on 'BT3.0 Mouse' or 'BT5.2 Mouse'. How to Connect the Mouse for iOS: You need to upgrade to iOS 13 or later. Go to Settings → Accessibility → Touch → AssistiveTouch → Turn on your phone or tablet and search for pairing.