Beats' Powerbeats Pro 2 and Apple's AirPods Pro 2 both feature in-ear heart rate monitoring - but which one's the better fit for your lifestyle?
Only a few wearables deliver accurate heart metrics that can help you make training decisions. A new study reveals which ones measure up.
We used Oura Advisor to assess heart rate trend over four weeks with the Oura Ring 4, and here are the results so far.