AMOVAN Smart Ring Health Tracker, Fitness Sleep Heart Rate Blood Oxygen Tracker Smart Ring, Water Resistant Bluetooth Fitness Tracker Rings

Activity Fitness Tracker: The fitness tracking ring records your exercise data and automatically monitors your heart rate and HRV every half an hour, or you can do it manually through the app.

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STEP & HEART RATE & SPO2 & SLEEP TRACKING: The rings continuously tracks and records your body vital all day. When you sport and gym workouts, records

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