1Compatible with Multiple Devices: Remote control scrolling ring with a wide range of compatibility, which can works seamlessly for IOS, for Android, and for Harmony OS devices. 2Convenient Page Turner: After wearing this remote control App page turner ring, you will find it more convenient to read books, watch videos, shoot movies, etc. 3Bluetooth Connection: Remote control App page turner adopted Bluetooth 5.0 for easy connection, provide reliable connection within 10m range, ensuring uninterrupted page turning. 4Support Mainstream APP: Remote control App scrolling ring support a variety of mainstream APP, one press the left and right keys to easily turn the page, convenient and practical. 5Comfortable to Wear: App page turner ring adopted ergonomic design, you can wear it comfortably on your fingertips, with USB Type C charging port for convenient use.