The Apple Watch Series 4's transformation from miniature iPhone and fitness tracker to medical device is now complete with the release of the ECG (electrocardiogram) app and irregular heart rhythm notifications.
The two heart-related features were introduced at the revamped smartwatch's debut in September and are now finally available via a software update.
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The ECG app is exclusive to the Apple Watch Series 4 as electrocardiogram readings need the electrodes built into both the heart rate monitor on the backside and within the Digital Crown to create a reading. Read more...More about Apple, Medical, Apple Watch, Smartwatches, and Heart