Photo 1 of Amazfit Helio Smart Ring, No Subscription, Monitor Sleep, Heart Rate, Stress, Fast 1.4 Hour Charging, iPhone and Android, Titanium Alloy, Swim/Shower Water-Resistance (Size 8)

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Photo 1 of Amazfit Helio Smart Ring, No Subscription, Monitor Sleep, Heart Rate, Stress, Fast 1.4 Hour Charging, iPhone and Android, Titanium Alloy, Swim/Shower Water-Resistance (Size 8)Photo 2 of Amazfit Helio Smart Ring, No Subscription, Monitor Sleep, Heart Rate, Stress, Fast 1.4 Hour Charging, iPhone and Android, Titanium Alloy, Swim/Shower Water-Resistance (Size 8)Photo 3 of Amazfit Helio Smart Ring, No Subscription, Monitor Sleep, Heart Rate, Stress, Fast 1.4 Hour Charging, iPhone and Android, Titanium Alloy, Swim/Shower Water-Resistance (Size 8)Photo 4 of Amazfit Helio Smart Ring, No Subscription, Monitor Sleep, Heart Rate, Stress, Fast 1.4 Hour Charging, iPhone and Android, Titanium Alloy, Swim/Shower Water-Resistance (Size 8)Photo 5 of Amazfit Helio Smart Ring, No Subscription, Monitor Sleep, Heart Rate, Stress, Fast 1.4 Hour Charging, iPhone and Android, Titanium Alloy, Swim/Shower Water-Resistance (Size 8)