https://medium.com/@drjohnm/im-a-heart-doctor-heres-why-im-wary-of-the-new-apple-watch-2b1999f2d942

Apple’s new watch sounds like a win for anyone interested in their heart health. It will notify wearers of a slow or irregular heart rhythm, and it can take a basic electrocardiogram (ECG), a recording of the electrical activity of the heart.

During Apple’s presentation of the new watch on Sept. 12, the company boasted of its FDA clearance and basked in praise from American Heart Association president Dr. Ivor Benjamin.