Apple’s Workout app features multiple swimming modes (pool swim ... still a bit more than the Watch GT 5 Pro), the Huawei Watch 4 Pro offers diving smarts thanks to its EN 13319 rating.

After each workout, the data from the goggles will sync with the Form Swim App to give you a more detailed analysis of your swim. It can also push this data to TrainingPeaks, Strava, Apple Health, ...