1APPLICABLE MODEL: Electric bluetooth smart scrolling ring is fit for IOS, fit for Android, fit for Harmony OS operating system with wide compatibility, providing great convenient for you. 2REMOTE CONTROLLER: After wearing this ring controller, you will find it more convenient to read eBooks, watch videos, make movies, click likes and so on. 3BLUETOOTH 5.3 STABLE CONNECTION: Turn on the Bluetooth for instant connection, easy pairing, and stable operation. One key fast forward and backward, adjust volume and brightness, play/pause as desired. 4USB TYPE C CHARGING PORT: With low power consumption, long lifespan, independent charging, and a Type C fast charging cable, fingertip button ring is environmentally friendly and durable. 5COMFORTABLE TO WEAR: Phone remote controller ring adopts ergonomic design, is mainly made of ABS material, very comfortable to wear for a long time. 6PAGE TURNING: Suitable for most APP and web browsing, one press left and right button to turn pages easily, watch short videos etc., easy to like for your favourite short videos