Photo 1 of POBOVi Smart Ring - Sleep/Stress/HR Tracker - Size First with Sizing Kit - Up 5-7 Days Battery Life - Using Wireless Charging Case - No APP Subscription - iOS/Android Compatible (Black, Size 11)

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Photo 1 of POBOVi Smart Ring - Sleep/Stress/HR Tracker - Size First with Sizing Kit - Up 5-7 Days Battery Life - Using Wireless Charging Case - No APP Subscription - iOS/Android Compatible (Black, Size 11)Photo 2 of POBOVi Smart Ring - Sleep/Stress/HR Tracker - Size First with Sizing Kit - Up 5-7 Days Battery Life - Using Wireless Charging Case - No APP Subscription - iOS/Android Compatible (Black, Size 11)Photo 3 of POBOVi Smart Ring - Sleep/Stress/HR Tracker - Size First with Sizing Kit - Up 5-7 Days Battery Life - Using Wireless Charging Case - No APP Subscription - iOS/Android Compatible (Black, Size 11)