Guilherme Rambo, 9to5Mac:

One of the new features of Apple Watch Series 4 is the ability to take an Electrocardiogram of the user’s heart through a series of new sensors on the back of the device and on the revised digital crown. Since this feature requires regulatory approval by health authorities, Apple Watch ECG will roll out to users in the United States first, where Apple was able to get clearance from the FDA.

But if you are outside of the United States?

This limitation is not enforced by hardware, and if you buy an Apple Watch Series 4 in any country, it includes the new sensors. Looking at code within iOS related to the ECG feature, we’ve been able to confirm that its limitation to the US will be based on the software region of the user’s devices (iPhone and Apple Watch).

Read the article for the key to changing your region and for the distinction between region and language. Very interesting.