However, the main innovation — a first for smart rings — is the addition of an FDA-cleared atrial fibrillation (AFib) sensor that reads the electrical activity of your heart, including the rate and ...

French upstart Circular has unveiled a fresh challenge to Oura — the current lord of the smart rings. Circular has just ...

You’ve reached your account maximum for followed topics. The Oura Ring 4 is the best smart ring you can get right now. It might not be the best deal (the Oura Ring Gen 3 is cheaper and very ...