R02 SIZE 8 Smart Ring, Support Heart Rate / Blood Oxygen / Sleep Monitoring / Multiple Sports Modes(Black)

About Product 1. Main Chip: RF032. Bluetooth: 5.03. Sensor chip: STK83214. Heart rate sensor: Vcare VC30F (Real heart rate)5. Battery Capacity: 17mAh6. Battery life: 5-7 days of use and 15 days of standby7. Charging time: About 1H8. Waterproof: IP68 waterproof9. Size 8: Dia=18.1mm; Perimeter=56.9mm10. Charging method: Magnetic charging11. Compatible system: Android5.1 or above, iOS8.0 or above12. APP: Qring (Connect the ring to the phone)13. APP Qring support language:English, Danish, Ukrainian, Russian, Croatian, Hungarian, Hindi, Indonesian, Türkiye, Hebrew, Greek, German, Italian, Latvian, Czech, Slovak, Slovenian, Japanese, French, Polish, Thai, Estonian, Swedish, Lithuanian, Simplified Chinese, Traditional Chinese, Romanian, Dutch, Portuguese, Spanish, Vietnamese, Arabic, Korean, MalayPacking list:Smart ring x 1Charging cable x 1User manual x 1Original retail box x 1