Google Pixel Watch 4 45mm Matte Black Aluminum Case, WiFi

The Pixel Watch 4 also features a brighter display, which has been boosted to a max brightness of 3,000 nits. This puts it on par with the Galaxy Watch 8, and marks a significant improvement over the 2,000 nits display on the Pixel Watch 3.

There's one more hardware change that's noticeable. On the right, you'll find the same crown and button for navigating the watch, as well as two metal contacts.