R04 SIZE 8 Smart Ring, Support Heart Rate / Blood Oxygen Monitoring / Sleep / Take Photos(Silver)
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R04 SIZE 8 Smart Ring, Support Heart Rate / Blood Oxygen Monitoring / Sleep / Take Photos(Silver)

$14.51
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About Product 1. Chipset: Jeri2. Bluetooth: 5.43. Sensor chip: STK8321-W4. Battery Capacity: 15mAh(18mAh for size 9 and above)5. Battery life: 5-7 days of use and 15 days of standby6. Charging time: around 1.5 hours7. Waterproof: 5ATM8. Size 8: Dia 18.3mm; Circumference 57.5mm9. Charging method: Magnetic charging10. Compatible system: Android5.1 or above, iOS8.0 or above11. APP: QRing12. 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, MalayMajor function1. Daily activities: Step count, distance, calorie calculation2. Health management: heart rate measurement, blood oxygen saturation, HRV heart rate variability, stress, sleep tracking, multiple exercise modes3. Other functions: remote control for

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