The Apple Watch Series 4 Long Promised Electrocardiogram (EKG) feature supports up-to-date WatchOS 5.1.2 updates, according to the Apple Store's educational certificate MacRumors.
Owing to this feature, the wearing device uses the EKG measurements, watch watches, and electrodes attached to the rear of the digital cores, to enhance the ability of Apple Watch to measure and monitor the users' heart. Apple has won Apple Watch's Type II FDA in the US, which, according to Angela Chen, is incomplete with the FDA's 3rd Kind of Approval.
According to the study document, the EKG features are only available in the cleaned regions to use the Apple Watch feature, which will only be visible to USA during the initial launch. It's hard to imagine that Apple will not work for other countries to receive medical care.
There is no beta release for the updated watchOS 5.1.2 developers, but when the latest version is released, there is no word.