function: 1. Remote Control: Connected via Bluetooth, when browsing the mobile app, you can browse the video through the ring, turn the page up and down, volume up and down, play pause, like, etc., freeing your hands. 2. Mobile Phone Camera Shutter Control: Efficient and stable Bluetooth chip, stable Bluetooth signal transmission within 10 meters. Take various creative photos/videos to record your wonderful time. 3. Rechargeable: Only one charging cable is needed to charge the product, which is convenient. The controller can work continuously for many hours without buying additional batteries. 4. Easy to Carry: The size of the remote control video page turner is 37.3 x 18 x 32.9 mm, the design is small and compact, it can be put in a clothing pocket, and it is easy to carry. 5. Wide Range of Use: Ring-shaped design, frosted material, comfortable and beautiful to wear, can not only lie down to watch mobile phone videos/e-books/news, but also take selfies at will, without taking off gloves to use the mobile phone in cold winter. Specification: Material: ABS Color: White Dimensions: 37.3 x 18 x 32.9 mm Battery Capacity: 50mAh Bluetooth Version: V5.3 Bluetooth Chip Usage Time: About 48 hours of continuous use Input Power: DC5V Support APP: Supports mainstream APP Weight: 6 grams Package Included: 1 x Bluetooth Video Page Turner Remote Control