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

The Circular Ring 2 aims to revolutionize the smart ring sizing process. It's also FDA-cleared for AFib detection.

Companies are trying just about everything to get employees back into the office, including offering employees a wearable smart ring to better detect if and when an office outbreak occurs.

However, the new Circular Ring 2 touts a whopping eight days of life per charge ... the Oura Ring 4 and Samsung Galaxy Ring. The Circular Ring 2 also ships with a new wireless charging dock ...