Ключевые слова: activity monitor, biometric data, cardiovascular fitness, digital health, electronic device, exercise tracker, fitness technology, fitness tracker, health and wellness, health gadget, health monitoring device, health tracking, healthy lifestyle, heart health, heart rate display, heart rate monitor, heart rhythm, personal device, physical activity, pulse tracking, realtime monitoring, smart health, smart wearable, smartwatch, tech accessory, wearable technology, workout accessory, wrist,