Meet the Circular Ring: a smart health tracking ring that analyzes your night and day data to give you more insight into your health. It combines with your smartphone to help you make better sense of your data. Circular can learn from your sleep patterns to wake you up during the light sleep phase. It can also count your steps and track your physical activities.
Circular can measure your heart rate, blood oxygen level, heart rate variability and sleep quality. It charges in 60 minutes and lasts up to 2 days on battery.