Does Fitbit Measure Heart Rate

Needless to say what makes the fitbit exclusive is it measures the resting pulse rate somewhat differently compared to other pulse rate monitors available on the marketplace.
Does fitbit measure heart rate. Many other fitbit trackers feature 24 7 heart rate monitoring including the versa. To determine your heart rate the optical heart rate sensor in your fitbit device flashes its green leds many times per second and uses light sensitive photodiodes to detect these volume changes in the capillaries above your wrist. Then your device calculates how many times your heart beats per minute bpm. Fitbit fitness trackers also measure the resting heart rate which means it even tracks heart rate when you are still calm awake and comfortable.
The fitbit alta does not track heart rate though the fitbit alta hr does include a heart rate tracking feature. Fitbit s trackers are also able to keep track of your resting heart rate a metric which refers to the heart rate measurement when you re awake calm and have not recently exerted yourself. What is the dangerously high heart rate when exercising.