Smart Ring Blood Sugar Testing Sleep Health Monitoring Ring

Product information:
Color classification: Obsidian Black, space silver, rose gold
Material: Standard version is 316 stainless steel, high-end version can choose pure titanium
Size: width 8.0mm, thinness 2 85/2.9mm
OTA support: supports Bluetooth OTA
Battery: rechargeable lithium polymer battery 14.521.5mAh (depending on ring shank size)
Waterproof grade: 5ATM
Data storage time: 15 days