Three years after the release, Apple Watch has finally been redesigned. It has a bigger screen in a similarly sized body while being lighter. It has a whole range of new health features, one of which is first ever in a wearable — ECG. Apple has figured out the two main use cases for Apple Watch: communication and health tracking and how they’re doubling down on both. Here are the 10 best Apple Watch Series 4 features that you should know about.