Irregular Heart Rhythms Expansion
In addition to the expanded ECG availability, Apple is also making irregular heart rhythm notifications available in Croatia, the Czech Republic, Iceland, Poland and Slovakia. The life-saving feature is now available in those three countries on eligible devices.
Unlike the ECG feature, irregular heart rhythm notifications are available on the Apple Watch Series 2 and the Apple Watch Series 3. They can be enabled by going to the iOS Health app and navigating to Heart > Irregular Rhythm Notifications.