The Apple Watch Series 4 is slimmer, lighter, and faster than previous models, with a focus on health tracking including fall detection and an FDA-approved electrocardiogram (ECG) function.

The Apple Watch has always included a built-in heart rate monitor but it has been limited to basic, standard functions of tracking the wearer’s heart rate.

The watch can now perform an ECG, detect atrial fibrillation, and detect when a person’s heart rate is too low. Apple even got the Watch certified by the FDA, a first, Williams said, among such a device as the Apple Watch

TheBL.com

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