Features 1. Bluetooth connection, ready to use, can connect Bluetooth earphones, watches, etc. simultaneously without affecting the simultaneous use of other devices. 2. Short video flipping: supports Douyin, Chopsticks SHOU, and Micro Vision, XIAO Red SHU, Video HAO and other mainstream video apps support flipping up and down, video likes, simple and smooth operation, no delay or lag. 3. Reading e-books: Supports apps such as Qidian, Qimao, Shuqi, NetEase Cloud Reading, Baidu Reading, etc. 4. Video likes: Lie down and swipe your phone to watch videos, no need to strain yourself, lift your arms, wear a smart ring, and instantly remotely control your phone, sending out small hearts for your favorite short videos. 5. Meeting reading mode: During the meeting, you can use the smart ring to flip up and down to browse the PPT. Specification Bluetooth version: BT4.0 Bluetooth effective distance: 2m Battery type: Rechargeable lithium-ion battery Battery capacity: 25mAh Charging: 90 minutes Available: 12 hours Standby time: 192h (single charge) Charging time: 1.5H Waterproof grade: IPX8 Material: Metal Finger circumference: 5.6 cm, 6.0 cm, 6.4 cm, 6.9 cm, 7.3 cm, 7.5 cm Color: Black Size: 9 x 9 x 3.5 cm Weight: 60 g Package Include: 1x Smart Ring Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.