R09 SIZE 8 Smart Ring, Support Heart Rate Blood Oxygen Sleep Monitoring Multiple Sports Modes About Product 1. Chipset: Realtek 2. Bluetooth: 5.2 3. Sensor chip:ST LIS2DOCTR 4. Battery Capacity: 14mAh 5. Battery life: 5-7 days of use and 15 days of standby 6. Charging time: About 1.5H 7. Waterproof: 5ATM 8. Size 8: Dia 18.3mm; Circumference 57.5mm 9. Charging method: Magnetic charging 10. Compatible system: Android5.1 or above, iOS8.0 or above 11. APP: QRing 12. APP support language: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, English Dutch, Portuguese, Spanish, Vietnamese, Arabic, Korean, Malay 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. Sold by-YJL official store