Author: Cameron Summerson / Source: How-To Geek

One of the standout features of the Apple Watch Series 4 is its ability to execute an ECG (electrocardiogram). It’s the first consumer product to do this, but the feature wasn’t available initially. Today, it is.
The ECG feature is designed to “capturing heart rhythm in a moment when they experience symptoms like a rapid or skipped heart beat and helping to provide critical data to physicians,” which could potentially save…
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