Ключевые слова: adult, beat, blood, cardio, cardiology, care, caucasian, check, checking, closeup, counting, device, digital, finger, guy, handsome, health, heart, heartbeat, high, home, hypertension, indoors, lifestyle, male, man, measure, measurement, measuring, medicine, monitoring, oximeter, people, person, pressure, pulsation, pulse, rating, rhythm, tracker, young,