The Apple Watch Series 5 delivers one key improvement over Series 4 and a number of smaller ones. The one most people will be interested in is the always-on display. Yes, your Apple Watch will finally never go dark. When you lower your wrist your watch will dim but still stay on. A function that is particularly useful for workouts. Raise it and the 1000-nits OLED display will fully light up.

There’s the addition of a compass and a better processor but other features are pretty much identical to the Series 4 device. Which means you get the ECG sensor, a next generation accelerometer and gyroscope which can sample motion data 8 times faster, GPS and more.

In addition to dishing out more accurate fitness tracking stats, the sensors allow the watch to identify and send out alerts if you fall or trip. There are also alerts for high and low heart rate and the watch will intermittently look at heart rhythms and send alerts if it spots atrial fibrillation.