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How to use the Action button on Apple Watch Ultra models

On Apple Watch Ultra models, the customizable Action button gives you quick, physical control over a variety of functions. It can do things like start a workout, mark a Compass Waypoint, or begin a dive.

During setup, you choose a function for the Action button, and you can change it any time, with Quick Switch making it even faster. Some actions offer additional options, too, and third-party apps may support the Action button.

Illustration of Apple Watch with an arrow pointing to the Action button on the left side.

Available functions for the Action button

Some actions offer additional options when you press the Action and side buttons simultaneously. The following list isn’t exhaustive; third-party apps may support the Action button.

Action What it does
Workout Press once: Go to the Workout app or start a selected workout.

Press again: Perform a secondary action based on the selected workout.

Press the Action button and side button together: Pause.

Stopwatch Press once: Start.

Press again: Mark a lap.

Press the Action button and side button together: Pause.

Waypoint Drop a Compass Waypoint
Backtrack Press once: Record your route.

Press the Action button and side button together: Toggle between Record and Retrace.

Dive Press once: Start a dive.

Press the Action button and side button together: Perform a secondary action based on the selected diving app.

Flashlight Press once: On

Press again: Off

Shortcut Start the selected shortcut.
Voice Memo Press once: Start a voice memo.

Press again: Stop recording.

Translate Press once: Start translating.

Press again: Stop translating.

Accessibility Press once: Turn on the selected Accessibility feature.

Press again: Turn off the selected Accessibility feature.

Recognize Music Press once: Listen and identify music.

Press again: Stop.

Customize the Action button

On Apple Watch Ultra models, you’re asked to choose a function for the Action button during setup. You can change the function any time.

  1. Go to the Settings app on Apple Watch Ultra.
  2. Tap Action Button and then do any of the following:

    • Change the action: Tap Action and choose an action, such as Workout, Backtrack, or Dive.

      Tip: You can change the action later using Quick Switch.

    • Choose an app: If the selected action is supported by more than one app, tap the app shown. Choose a different app.
    • Change the actions available in Quick Switch: Tap Quick Switch and turn on or off any of the available actions. You can also turn off Quick Switch.
    • Deactivate Siren: If you don’t want to activate Siren by pressing and holding the Action button, turn off Hold to Turn On.

Quickly switch the function of the Action button

On Apple Watch Ultra models, you can do the following:

  1. Press and hold the Action button.
  2. Choose an action.

    The Quick Switch screen showing the actions that can be assigned to the Action button, such as Workout, Stopwatch, and Waypoint.

To customize Quick Switch, go to the Settings app, tap Action Button, tap Quick Switch, then choose the actions you want to be included in Quick Switch. You can also turn off Quick Switch.

Turn off the Action button

  1. Go to the Settings app on Apple Watch Ultra.
  2. Tap Action Button, tap Action, and tap None.

See also