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can last up to 13 days in smartwatch mode, while hybrid options like the Withings ScanWatch 2 Go to product viewer dialog for this item. can last up to 30 days.

Most watches use optical sensors (PPG) that measure blood flow through the skin. For medical-grade precision during intense workouts, some advanced models also offer ECG/EKG sensors to detect irregular rhythms like AFib buy heart rate monitor watch

The Ultimate Guide to Buying a Heart Rate Monitor Watch in 2026 can last up to 13 days in smartwatch

Many modern watches also track sleep quality, stress levels, and blood oxygen (SpO2) saturation. Key Features to Look For buy heart rate monitor watch