No ECG

If you thought that the Apple Watch SE was basically just an upgraded Series 4, it may come as a surprise that the electrical heart sensor and accompanying ECG feature is also being omitted here. This actually makes it a step back from the Series 4 when it comes to health monitoring features.

In other words, it basically packs in the same heart sensors as the Apple Watch Series 3, which means you’ll get high and low heart rate notifications, and irregular rhythm notifications.