Ключевые слова: app, athlete, background, bpm, business, clock, close up, communication, concept, connection, design, device, digital, display, electronic, exercise, fitness, gadget, hand, health, heart, interface, kilometers, lifestyle, male, man, mobile, modern, outdoor, people, person, runner, screen, smart, smart watch, smartwatch, sport, team, technology, time, touch, touchscreen, tracker, training, using, watch, wearable, wireless, wrist, wristwatch,