or photoplethysmogram sensor, otherwise known as a pulse oximeter, which uses optical methods to detect changes in blood volume beneath the skin. From this data, a pulse rate can be derived ...

We picked the Fitbit Versa as best overall heart rate monitoring watch after assessing features, functionality, and price. But we’ve taken the pulse of other top options. Share on Pinterest You ...

A brand new feature for this year is the integrated heart rate monitoring. Each earbud features an optical sensor and together ... are axially aligned with the acoustic nozzle for the most direct ...