Ключевые слова: adult, africanamerican, afro, background, beat, blood, cardio, cardiology, care, check, checking, closeup, counting, female, grey, hand, health, heart, heartbeat, high, hypertension, ill, lifestyle, measure, measurement, measuring, medic, medicine, monitoring, normal, people, person, pressure, pulsation, pulse, rate, rating, rhythm, sick, stress, time, woman, wrist, young,