More than 10 million people worldwide use Fitbit's Irregular Rhythm Notification ... doctor assess any potential health problems. The heart rate data they gather specifically can be very useful ...

The Fitbit Sense 2 is a smartwatch compatible with iOS and Android and includes real-time heart rate monitor ... ECG and multi-sport tracking features: cycling, bootcamp, circuit training ...

The filing suggests it could have a PPG sensor as well as the inflatable blood pressure-reading hardware, to allow it to record heart rate and blood oxygenation. It suggests Fitbit may go further ...

We think the best fitness tracker with heart rate monitor you can buy is the Fitbit Charge 5 (buy now). It’s built to track your heart while at the gym, but along with Fitbit’s optical heart rate ...