I bought a watch in America, but I can not adjust the work of the ECG. There are no feature in the clock or in the Health app on the iPhone.
For the operation of this chip you need to comply with some not the most obvious conditions. The most important of them is that watches should be bought in the USA.
In addition, you must check the following:
First , Apple Watch must be upgraded to watchOS 5.1.2 or higher.
Secondly , paired with the iPhone clock, you need to upgrade to iOS 12.1.1 and higher.
Third , the user must be over 22 years old . Data is stored in the user’s medical record.
To change or enter data you need to go to Settings – Siri and Search – My information and specify your contact from the phone book (if not, create one).
After that, in the contact editing menu you need to find the Medical Card section . Here you need to specify the age of the user.
If everything is done correctly, in the Health app you will see a wizard for setting up a new ECG chip.