A. ### How to use it? 1. Android system: Turn on the ring switch, turn on Bluetooth and connect. It can be used for reading novels or taking selfies. 2. iOS system: Open (Settings - Accessibility - Touch - AssistiveTouch), turn on the ring switch, turn on Bluetooth and connect. It can be used for reading novels or taking selfies. B. ### Product features 1. This product is a mobile phone controller, a wireless lazy key ring, and a remote - control ring. 2. The mobile phone Bluetooth remote - control ring can control functions such as page - turning browsing and liking of APP short - video pages. 3. It is equipped with an on/off key and a USB charging port. Short - press the on/off key to turn it on. A single click can jump to the next video, and a double - click can like the video. 4. After charging for about 2 hours, it can have a battery life of around 24 hours. C. ### Product specifications 1. Color: White 2. Material: Plastic D. ### Packaging contents 1. One page - turner E. ### Precautions 1. Due to light reflection and display differences, the color of the product may show slight variations from the actual item. 2. The measurement may have an allowable error of +/- 1 - 3 cm. Only the above packaging contents are included, and other products are generally not included.