Perhaps the most important new feature available on the Apple Watch Series 4 is the Electrocardiogram (ECG) scanner. While the heart rate monitor on the Apple Watch checks how fast your heart is beating, the ECG checks the electrical activity of your heart. The test determines whether you have an irregular heartbeat that needs immediate medical attention. This feature has already saved at least one life.

With the Apple Watch Series 4 priced at $399 and up, not everyone can afford to wear one on their wrist. Withings announced today at CES a more affordable solution ...


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