Google Assistant is not preinstalled with the watch, but it’s easy to download, and you’ll be using your new assistant in a matter of minutes.

1. First, make sure you have a Google account added to your watch, and make sure you’ve got an internet connection.
2. To download the Assistant app, navigate to the Apps screen, and then open the Play Store.
3. Tap the Search icon (it looks like a magnifying glass). Use one of the typing methods to search for and then select Assistant.
   
   
4. Tap Install to begin downloading it. When it's finished, tap Open to begin using Google Assistant.
   
   Note: You may need to continue setting up your watch’s Google Assistant from your phone.
5. To access Google Assistant at a later time, navigate to the watch’s Apps screen and then tap Assistant.
   
   Note: The default assistant will be Bixby unless you change it.
6. After you’ve gone through the initial setup, you can start giving Google Assistant your commands! The assistant works with the following apps: Maps, YouTube Music, Messages, Dialer, Agenda, Timer, Alarm, and Clock. For a more detailed list of apps and commands that work with the assistant, please check out Google’s official guide on Google Assistant.

Galaxy Wearable app

Select the default Voice assistant for the watch. Open the Galaxy Wearable app on the phone that is connected to the watch, then tap Watch settings, and then tap Buttons and gestures. Tap Press and hold, and then tap Assistant to choose Google Assistant.

Watch

Select if you want contactless interaction with Google Assistant and Speech output from the watch. From the watch’s Home screen, swipe down from the top to access the Quick settings panel, and then tap Settings. Tap Google, and then select Assistant. Tap the switches next to “Hey Google" and Speech output to turn them on. Tap Turn off Assistant to turn off Google Assistant.