R12 SIZE 11 Smart Ring, Support Heart Rate Blood Oxygen Sleep Multiple Sports Modes About Product 1. CPU:Dialog DA14585 2. Bluetooth: 5.1 3. G Sensor:SC7A20 4. Battery Capacity: 16mAh 5. Working time: About 3-5 days 6. Charging time: About 1H 7. Waterproof: 5ATM 8. Size 11: Dia 21mm; Circumference 65.9mm 9. Charging method: Magnet Cable(With SMT Protect IC) 10. Compatible system: Android6.0 or above, iOS11.0 or above 11. APP: Jring 12. APP support language:multilingual languages Function: 1. Multiple movement modes,heart rate,sleep,blood oxygen 2. Steps,time display,hand gestures brush tiktok 3. Wave your hand to take a picture immediately,Wechat&Apple Packing list: Smart ring x 1 Charging cable x 1 User manual x 1 COMPATIBLE retail box x 1 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.