MacRumors has published a new video showing a speed comparison between the new Apple Watch Series 4 and all other Apple Watch models. The new dual-core S4 chip has significantly improved the overall performance of the Series 4 model.

Check out the full side-by-side comparison with all Apple Watch models the company has released since 2015:

The improved chipset allows for better power efficiency, allowing Apple to get more battery life out of a smaller battery. It also allows Apple to provide customers with new health-related features like ECG readings, fall detection, and low heart-rate detection.

It’s not surprising, but the Apple Watch Series 4 is definitely the fastest model to date. However, if you have a Series 3 device, you probably won’t notice too much of a speed difference.

Have you updated, or considered updating, to the Apple Watch Series 4? Let us know in the comments below!