lumthou Smart Ring – Free SpO2 Sleep Tracker | No Subscription | IP68 Waterproof Fitness Tracker | 24/7 Activity Monitor | Step Counter & Tracking | Sleep & Workout Accessory Silver 7

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$99.99

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📝. ：Your health insights at your fingertips. Precisely tracks heart rate, blood oxygen (SpO2), heart rate variability (HRV), stress levels, period prediction, activity status, and skin temperature trends. (Details supplied by the promoter.)

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