Oura Ring 5 Is 40% Smaller, Detects Blood Pressure Changes and Sleep Disturbances

Oura Health Oy, the popular smart ring maker seeking to go public this year, unveiled a significantly thinner and lighter new model along with new wellness features.

The Oura Ring 5 is 40% smaller overall than its predecessor, bringing its size and thickness more in line with an ordinary wedding band. The company was able to accomplish that in part by reducing the size of the battery pack while still promising battery life of up to about a week on one charge.