Multi functional smart ring camera 6.8mm heart rate blood oxygen wearable sleep detection health Bluetooth

Full Product Description (From the manufacturer)

Support lithium battery protection: Under-discharge protection voltage is 2.8V. Overcharge voltage when fully charged is 4.2V. The MCU has a built-in charging management PMU. The configurable charging current range is 5-300mA. It supports anti-reverse connection Running, cycling, Ropeskipping, Walking, Mountaineering, yoga, Dance,golf Accurate distance / accurate calorie data accurate step count 31 languages: Simplified Chinese Traditional Chinese English French Italian Spanish Portuguese, Japanese German Polish Hungarian Russian Ukrainian Korean Vietnamese Thai Croatian, Swedish, Norwegian, Danish, Finnish, Czech, Slovak, Irish, Arabic, Hebrew, Persian Turkish, Romanian, Greek, Indonesian Sleep Temperature Difference is calculated by comparing it with your average temperature.Sleep Activity Status and 7-Day Sleep Trend Records & Statistics.syi