Casio’s Tiny Ring Watch Is Now a Full-Blown Oura Alternative - Gizmodo

The CRW-H001 can track heart rate, blood oxygen, and sleep and vibrate when you receive a notification.

Casio has dabbled with adding smart features to its iconic watch designs before, but the company is trying a new twist on that idea by making the follow-up to its viral ring watch a proper Oura Ring …