The screen steals the show
- Great battery life - Huge, beautiful screen - Health-tracking features
- Siri is still unreliable - No always-on screen option - Complication options can be confusing
Apple claims 18 hours of regular use or six hours of outdoor workouts.
WatchOS 5 is able to detect low heart rate now, in addition to high heart rate. Later this year, Apple will add detection for irregular rhythms and provide notifications for them. The big new feature on the Series 4 is that it can take an electrocardiogram (EKG) using electrodes