Fangrui Product Details 1. R08 Size 9 Smart Ring, Support Heart Rate Blood Oxygen Sleep Multiple Sports Modes 2. About Product 3. Chipset: Realtek 4. Bluetooth: 5.2 5. Sensor Chip: St Lis2doctr 6. Battery Capacity: 15mah 7. Battery Life: 5-7 Days Of Use And 15 Days Of Standby 8. Charging Time: About 1.5h 9. Waterproof: 5atm 10. Size 9: Dia 19.2mm; Circumference 60mm 11. Charging Method: Magnetic Charging 12. Compatible System: Android5.1 Or Above, Ios8.0 Or Above 13. App: Qring 14. 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 15. Function: 16. Step Count, Sleep Monitoring, Heart Rate Tracking, Exercise Data Records 17. Health Monitoring, Pressure, Blood Oxygen Measurement 18. Multiple Sports Modes, Photography, And Message Reminders 19. Packing List: 20. Smart Ring X 1 21. Charging Cable X 1 22. User Manual X 1 23. Compatible Retail Box X 1