Photo 1 of POBOVi Smart Ring - Health & Sleep Tracker, Continuous SpO2 & Heart Rate Monitor, Stress Management, NFC Wireless Charging, 6-Day Battery, Water-Resistant(IP68), iOS & Android Compatible (Black, 11)

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Photo 1 of POBOVi Smart Ring - Health & Sleep Tracker, Continuous SpO2 & Heart Rate Monitor, Stress Management, NFC Wireless Charging, 6-Day Battery, Water-Resistant(IP68), iOS & Android Compatible (Black, 11)Photo 2 of POBOVi Smart Ring - Health & Sleep Tracker, Continuous SpO2 & Heart Rate Monitor, Stress Management, NFC Wireless Charging, 6-Day Battery, Water-Resistant(IP68), iOS & Android Compatible (Black, 11)Photo 3 of POBOVi Smart Ring - Health & Sleep Tracker, Continuous SpO2 & Heart Rate Monitor, Stress Management, NFC Wireless Charging, 6-Day Battery, Water-Resistant(IP68), iOS & Android Compatible (Black, 11)Photo 4 of POBOVi Smart Ring - Health & Sleep Tracker, Continuous SpO2 & Heart Rate Monitor, Stress Management, NFC Wireless Charging, 6-Day Battery, Water-Resistant(IP68), iOS & Android Compatible (Black, 11)