Apple Watch Ultra: How to Use the Built-In Siren to Signal for Help

Apple Watch Ultra has an 86-decibel siren that you can use if you ever become lost, injured, or have some other emergency situation.

Two distinct alternating patterns are used in the sound signature of the siren. The sirens can be heard up to 600 feet away, and the first pattern suggests distress.

It's loud so don't turn it on in an enclosed environment or hold your watch close to your ears when the sirens sound.

How to Turn on Siren on Apple Watch Ultra

The action or side button can be used to turn on the sirens.

Using the Action Button:

1. Press and hold the Action button until the Siren slider appears.
2. Drag the Siren slider to start a countdown.
3. After the countdown, the Siren starts.

You can hold the action button until the sirens start. If you don't want the Siren to use this continual hold action, you can turn it off by going to the settings page and selecting the action button.

Using the Side Button

1. Press and hold the Side button until the Siren slider appears.
2. Drag the Siren slider to start a countdown.
3. After the countdown, the Siren starts.

How to Cancel the Siren on Apple Watch Ultra

During the time period, you can cancel the sirens. You can cancel the action button if you hold it. If you start the clock by dragging the Siren button, cover the display with your hand for at least three seconds.

Simply tap the central stop button in the app to cancel the sirens.