1. ### How to use it? 1. Android system: Turn on the ring switch, turn on Bluetooth and connect. It can be used for reading novels/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/selfies. 2. ### 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. Just charge it for 2 hours, and it can achieve 24 - hour battery life. 3. ### Product specifications 1. Color: White 2. Material: Plastic 4. ### Packaging contents 1. One page - turner 5. ### Precautions 1. Due to light reflection and display differences, the color of the product may vary slightly from the actual item. 2. The allowable measurement error is +/- 1 - 3 cm. Only the above packaging contents are included, and other products are not included.