After 10 months of testing the Oura Gen3 Ring, I’ve concluded that if you ... by shining a little red light into your finger and then measuring how much light is reflected back.

At first glance, they look like any other piece of jewelry, a simple gold or silver ring. But with tiny sensors, these rings track biometrics through your finger. Yes, they'll track your step ...

Circular is a relatively small player in the smart ring segment, which is currently ... research as a non-invasive cuff-less technique for measuring blood pressure. This is what a research paper ...

Compare the measurement to a ring size chart to find your closest size. You can also do the same with paper, cutting a strip no wider then 1.5cm and measuring the size of the loop it makes around ...