R11M SIZE 7 Smart Ring, Support Heart Rate / Blood Oxygen / Sleep / Multiple Sports Modes(Black)

About Product 1. Main Chip: AC63232. Bluetooth: 5.03. Sensor chip: SC7A20H4. Battery Capacity: 20mAh5. Battery life: 3-5 days of use and 7-10 days of standby6. Charging time: About 1-2H7. Waterproof: IP688. Size 7: Dia 17.3mm; Circumference 54.3mm9. Charging method: Magnetic charging10. Compatible system: Android5.1 or above, iOS8.0 or above11. APP: Smart Health12. APP support language:English, Simplified Chinese, Traditional Chinese, Russian, Ukrainian, German, French, Italian, Spanish, Portuguese, Polish, Greek, Romanian, Hungarian, Czech, Slovak, Irish, Croatian, Swedish, Danish, Finnish, Arabic, Farsi, Norwegian, Japanese, Korean, Thai, VietnamesePacking list:Smart ring x 1Charging cable x 1User manual x 1Original retail box x 1