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V10 Health-Fitness Tracker with Heart Rate, Sleep Monitor, Blood Oxygen, Hrv, 128 Sports Modes, IP68 Waterproof Smart Rings, Find Details and Price about Smart Rings Health Rings from V10 Health-Fitness Tracker with Heart Rate, Sleep Monitor, Blood Oxygen, Hrv, 128 Sports Modes, IP68 Waterproof Smart Rings - Shenzhen Jingyun Iot Technology Co.,Ltd