https://arstechnica.com/gadgets/2019/09/apple-watch-series-5-review-a-better-more-independent-timepiece/

At this point, we all know what an Apple Watch is and what it does well. Apple knows that, too. So with the $399 Apple Watch Series 5, the company homed in on small features that could make a big difference when using the Watch on a daily basis.

You won't find a radically different looking smartwatch here, nor will you find a smartwatch with a lot of new moving parts or even a dramatically upgraded CPU. The Series 5 and watchOS 6 refine little details and push the Apple Watch even closer to being an independent device—and this is quite possibly the closest it will ever get to separating itself from the iPhone.