Heart rate monitors with finger sensor

Finger sensor

— sensors designed to contact the user's finger. Technically, most of them are built-in, but such sensors are still classified as a separate category, because. they do not provide constant monitoring of the heart rate — the measurement is carried out only when you touch the sensor. There is another variety — "clothespins" that are constantly on the finger; they provide continuous data acquisition, but are not very convenient for some sports, therefore they are much less common. Anyway, finger sensors have good accuracy, but they are much more expensive than chest ones.