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

The Oura Ring 4 is ... needs to be removed to charge almost daily and may be too bulky to comfortably sleep in, the ring can quietly be worn and rack up days of data without intrusion.

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 ...

I wore the Samsung Galaxy Ring (alongside my 3rd gen Oura Ring) for a month, taking it off only to charge it, shower or do the washing up (this isn't necessary as the ring is water-resistant ...

Though the Oura Ring is ... and the ring went on the stick with magnetic contacts that weren’t very strong. The Circular Ring 2 has a new wireless charging dock that is much simpler to use ...