These are the wearables that can take an ECG in 2021 - Gearbrain

These smartwatches and fitness trackers are capable of taking an ECG inn 2021, but some are still await regulatory approval in the US
These devices keep an eye on your heart rhythm and send the results to your smartphone

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Best Fitness Trackers and Smartwatches to buy now or soon - Gearbrain

Wearable healthcare technology and patient monitoring

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The world's first analog watch with clinically validated ECG - ScanWatch

Smartwatch buying guide 2023: Which device should you buy? - Gearbrain