Photo 1 of ***10*** Twievo Smart Ring, Fitness Tracker Ring with Charging Case, IP68 Waterproof, Heart Rate, Blood Oxygen, Sleep Tracker, No App Subscription-Compatible with Android 6.0+ and iOS 11.0 (Black, 10#)

Double tap image to zoom

Photo 1 of ***10*** Twievo Smart Ring, Fitness Tracker Ring with Charging Case, IP68 Waterproof, Heart Rate, Blood Oxygen, Sleep Tracker, No App Subscription-Compatible with Android 6.0+ and iOS 11.0 (Black, 10#)Photo 2 of ***10*** Twievo Smart Ring, Fitness Tracker Ring with Charging Case, IP68 Waterproof, Heart Rate, Blood Oxygen, Sleep Tracker, No App Subscription-Compatible with Android 6.0+ and iOS 11.0 (Black, 10#)