The Apple Watch 7 is mainly distinguished by a larger display without much of an increase in the watch size. The Californians have also equipped it with a fast charge function, but this is as far as the improvements for the newest Apple smartwatch go. Find out in our test, for whom the changes might still be worthwhile.
https://www.notebookcheck.net/Apple-Watch-Series-7-review-More-display-area-for-Apple-s-smartwatch.578700.0.html
Apple watch series 7 is better than series 6 because its display is larger than series 6 and it has more thicker protected glass layer of panel