Use the Apple Watch as a Walkie Talkie
You can use your Apple Watch as a walkie talkie. This is handy for quick communication when you are out and about.
The new Walkie Talkie app on the Apple Watch allows you to use the new app to send audio messages that automatically play when you are marked as available.
This allows you to quickly chat back and forth with friends during the day or connect with them when you are at an event like a concert easily. In 2020, some people are using this like an intercom at home.