The Realme Watch 2 Pro is a new smartwatch with a blood-oxygen sensor, 90 sports mode and sleep-tracking - as does its vanilla sibling. However, it has a bigger 1.75-inch display, as well as the in-built GPS the plain Watch 2 lacks. It also has exclusive new watch-faces, as well as a larger battery rated for up to 14 days of use between charges.
https://www.notebookcheck.net/Realme-launches-the-Watch-2-Pro-with-2-more-days-of-battery-life-and-a-larger-display-compared-to-the-base-model.540460.0.html