The current Watch 3 is already pretty health-centric, but Apple has taken it to a new level with its latest model. Thanks to a new electric heart sensor built into the backside, the Watch Series 4 can not only detect a low heart rate but also act as an electrocardiogram (ECG). That means it can sense a dangerous condition known as an atrial fibrillation and warn you to talk to your doctor. The Watch Series 4 has received clearance from the FDA and is the first over-the-counter ECG app offered directly to consumers, Apple claimed.
It checks your ECG in the background, and while it won't catch every instance of fibrillation, it could help people who don't even know they have an issue. Apple brought American Heart Association President and cardiologist Dr. Ivor Benjamin onto the stage, and he said the feature could be valuable for certain users. "In my experience, people often report symptoms that are absent during their visits. That is why this information is vital," he said.