Photo 1 of Smart Ring, Topss Fitness Tracking Smart Ring with Calories/Heart Rate/Blood Oxygen/Sleep Monitoring, IP68 Waterproof, No APP Subscription, Compatible with iOS/Android (Rose Gold,8#)

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Photo 1 of Smart Ring, Topss Fitness Tracking Smart Ring with Calories/Heart Rate/Blood Oxygen/Sleep Monitoring, IP68 Waterproof, No APP Subscription, Compatible with iOS/Android (Rose Gold,8#)Photo 2 of Smart Ring, Topss Fitness Tracking Smart Ring with Calories/Heart Rate/Blood Oxygen/Sleep Monitoring, IP68 Waterproof, No APP Subscription, Compatible with iOS/Android (Rose Gold,8#)