One of the unique safety features built into Apple Watch Ultra is an 86-decibel siren. It uses two different sound patterns to attract help with the alert being heard up to 600 feet away. Here are 4 ways to use Apple Watch Ultra siren, plus how to turn it off.

Here’s how Apple describes the Ultra’s siren:

  • When you turn on Siren, Apple Watch Ultra plays a continuous siren that repeats at regular intervals and that can be heard up to 600 feet away.
  • The siren is a unique, high-pitched sound that includes two distinct patterns that are not generally heard in nature or the environment and that alternate and repeat.
  • Siren pauses in certain situations, like during phone calls, and when timers or alarms sound, but not while podcasts or music are playing.
  • Siren continues sounding until you turn it off or your watch runs out of battery.
  • If possible, don’t turn on Siren in enclosed environments or hold your watch close to your ears while Siren is sounding.

For a deep dive into how Apple Watch Ultra compares to the rest of the lineup, check out our full guide:

  • Apple Watch Ultra vs Series 8, SE: In-depth comparison of the new lineup

How to use Apple Watch Ultra siren: 4 options

Use Siri

  • Ask Siri to “Open the Siren app”
  • Now tap the red play button

At this time, you cannot use Siri to start the siren directly

Open the app to use the Apple Watch Ultra siren

  • On your Apple Watch Home screen, tap the Siren app (red megaphone icon)
  • Tap the red play button to start the siren

Use the side button to activate the siren

  • Press and hold the side button on your Apple Watch Ultra
  • Move the Siren slider to the right to start it

Use the Action button to activate the siren

  • Press and hold the Action button to start the Siren countdown and continue holding it until it begins

or

  • Press and hold the Action button on your Apple Watch Ultra
  • Move the Siren slider to the right to start it

Check out a hands-on video from my colleague Colin from our sister-site Connect The Watts:

How to turn off Apple Watch Ultra siren

  • Open the Siren app

  • Tip: press the side button to launch the Dock for quick access to the app

  • Tap the stop button

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Top image via Apple

  • Tip: press the side button to launch the Dock for quick access to the app