Smart ring with charging compartment and waterproof feature

Smart ring with charging compartment and waterproof feature
Battery capacity: 18mAh
Appearance size: 90*90*46mm
Product weight: 15g
Target users: Men, women, children and adults
Compatible operating systems: Android 5.1 (inclusive) and
above, IOS 8.0 (inclusive) and above
Additional functions: Sleep monitoring,
blood pressure measurement, step count,
heart rate, blood oxygen saturation
Compatible platforms: iOS