Walkie Talkie
Similar to Apple Watches, Samsung has introduced the Walkie Talkie feature on their Galaxy Watch 4. With this feature, two people holding Galaxy Watch 4 can communicate with each other. It is like having an instant conversation as if using a Walkie Talkie.
The watch doesn’t have this feature right out of the box. To get Walkie Talkie, install Samsung’s official Walkie Talkie app, released specially for Galaxy Watch 4 & Watch 4 Classic users.
Once installed, it is recommended to pair the watch with your smartphone. On pairing, you will be able to invite contacts and people nearby. Tapping on people nearby creates a Walkie Talkie channel. Then, it shows you a code to share with people nearby who wants to join.
Overall, an awesome feature, but at the same time, both you and your partner need to own a Galaxy Watch 4.