Only use this tag for questions that specifically apply to the Apple Watch OS5. Use the [watch-os] tag for questions related to general [watch-os]. Hardware questions generally belonging to the Appe Watch should be in the Ask Different community.
Watch OS5 is a operating system for SmartWatches produced by Apple. Its key features include:
- Activity competitions
- Workout updates
- Advanced running features
- and many more
Read more about it on the developer page