Apple debuted a new Apple Watch previously this fall, the Apple Watch Series 4.

The brand-new watch has a bigger screen, updated heart-tracking sensing units, and a much faster chip than in 2015’s design, the Apple Watch Series 3.

However it likewise bears a number of resemblances to in 2015’s design: the brand-new watch gets the very same quantity of battery life (18 hours) and the style looks almost similar to the Series 3, and to previous variations prior to that.

So whether you’re a novice Apple Watch purchaser, or you’re simply attempting to choose if you ought to update from in 2015’s watch, here’s how the Apple Watch Series 4 compares to the Apple Watch Series 3.