Photo 1 of Smart Ring, Activity & Fitness Tracker Ring for Women/Men, No APP Subscription, Fitness Tracking Smart Ring with Calories/Heart Rate/Blood Oxygen/Sleep Monitoring, IP68 Waterproof (Black, 9#)

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Photo 1 of Smart Ring, Activity & Fitness Tracker Ring for Women/Men, No APP Subscription, Fitness Tracking Smart Ring with Calories/Heart Rate/Blood Oxygen/Sleep Monitoring, IP68 Waterproof (Black, 9#)Photo 2 of Smart Ring, Activity & Fitness Tracker Ring for Women/Men, No APP Subscription, Fitness Tracking Smart Ring with Calories/Heart Rate/Blood Oxygen/Sleep Monitoring, IP68 Waterproof (Black, 9#)