Electrocardiogram-Capable Smartwatches: Assessing Their Clinical Accuracy and Application

Wearable technology has progressed significantly so that today's smartwatches are able to offer advanced health monitoring functions such as electrocardiogram (ECG). This study contains data that can be used to clinically assess the accuracy of four leading smartwatch models: Apple Watch Series 9, Samsung Galaxy Watch 6, Fitbit Sense 2, and Withings ScanWatch. Using the standardized protocol of the International Electrotechnical Commission (IEC 60601-2-25:2011) and a METRON PS-440 patient simulator, controlled ECG signals were generated and recorded to assess smartwatches performance against a reference electrocardiograph (Philips TC30). Parameters such as heart rate (30 to 300 beats per minute), R-wave amplitude (500 to 2000 µV), and ST-segment elevation/depression (-800 to +800 µV) were configured in the patient simulator and recorded 5 times in all devices. This extensive dataset provides valuable information on the feasibility of smartwatches as diagnostic tools, and both their strengths and limitations for clinical and remote cardiovascular monitoring can be observed.