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【Multiple Functions Health Tracker】The smart ring has multiple functions, which can monitor your heart rate, temperature and blood oxygen at any time,
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Smart Ring Bluetooth Connection IPX8 Waterproof Rechargeable Smart Rings for Heart Rate Sleep Monitor Health Fitness - AliExpress
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Xiaomi Youpin New Smart Ring Ring Bluetooth Black Technology Heart Rate Blood Oxygen Sleep Monitoring Waterproof Ring
NOVA Smart Ring Titanium Alloy Health Tacker Blood Oxygen Heart Rate Sleep Monitor GPS Sport Mode Pressure testing for Men Women - AliExpress
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