Apple Watch heart features finally arrive, allowing people to take ECGs on their wrist

The Apple Watch's long promised heart features have finally arrived on people's watches. When the Series 4 was announced in September, the company said that it would let people take ECGs and see if their heartbeat is irregular. But it would not be available straight away because it had to be approved by regulators, it said at the time. Now the features have been given clearance by the US Food and Drug Administration and so will finally be available, arriving through a software update. The ECG and atrial fibrillation features are not yet available outside the US, including in the UK.