Ключевые слова: activity, adult, athlete, background, beat, blood, cardiac, cardio, cardiology, care, checking, closeup, copy, device, exam, female, finger, fitness, girl, health, heart, heartbeat, hiker, jogging, measure, medical, modern, outdoors, oximeter, person, pressure, pulse, pulsimeter, pulsometer, rate, rhythm, run, runner, self, space, sport, street, technology, test, text, time, training, woman, workout, young,