Apple Watch Ultra features a customizable Action button on the left side of the case that is capable of performing a variety of functions. This article explains what it can do, and how you can configure it.

Apple Watch Ultra Orange Alpine Loop Action button 220907 big
Apart from activating the Siren, the Action Button on Apple Watch Ultra can be customized to perform a number of functions, offering quick access to them without you having to tap through various screens.

When you first set up your Apple Watch Ultra, you'll be invited to assign one of the following functions to it:

  • Workout
  • Stopwatch
  • Waypoint
  • Backtrack
  • Dive
  • Flashlight
  • Shortcut
  • None

You can customize your selection further, depending on the app or function chosen. If you chose the Workout app, for example, pressing the Action button once will open the Workout app, but you can also assign the "First Press" function within the app to start a specific workout.

action button mark segment
But that's not all. When you've started the activity, you can then press again to perform a secondary function, such as marking segments or laps in a track workout, or switching from cycling to running in a triathlon. Again though, what function this is will depend on the current activity.

How to Map Functions to the Action Button

Once your Apple Watch Ultra is set up, you can re-assign functions to the Action button via a new menu right on your wrist, like so.

  1. On Apple Watch Ultra, launch the Settings app.
  2. Scroll down and tap Action Button.
  3. Tap the menu under "Action" and select one of the following options: Workout, Stopwatch, Waypoint, Backtrack, Dive, Flashlight, and Shortcut.
    settings

  4. Tap the arrow in the left-hand corner to go back to Action Button settings.
  5. Tap the menu under "App" if it appears, then select an app to perform the action. Some actions, such as Flashlight, don't show the App option.
  6. Tap the arrow to go back.
  7. Tap the menu under "First Press" if it appears, then select an action. Some features allow different actions to happen on the first and second press of the button.

Tips appear on the screen under "Gestures" explaining how the Action button works with the settings that you've assigned to it. For example, tips for an outdoor walk show you that pressing the Action button once starts a workout, and pressing the Action button and the side button at the same time pauses the workout.

Configuring the Action Button via iPhone

You can also use the iOS Watch app to configure what the Action button on the Apple Watch Ultra does.

  1. Launch the Watch app on your iPhone.
  2. Tap the My Watch tab if it's not already selected.
  3. Tap Action Button.
  4. Under "Action," tap the currently selected action to change it.
  5. Select from one of the following options: Workout, Stopwatch, Waypoint, Backtrack, Dive, Flashlight, and Shortcut.
  6. Tap Action Button to go back to the previous menu.
  7. Tap the menu under "App" if it appears, then select an app to perform the action. Some actions, such as Flashlight, don't show the App option.
  8. Tap the arrow to go back.
  9. Tap the menu under "First Press" if it appears, then select an action. Some features allow different actions to happen on the first and second press of the button.

settings

Note that tips on the screen under "Gestures" explaining how the Action button works with the settings that you've assigned to it.

Note that if you want to pause the current action, you can press and hold both the Action and Side buttons at the same time. Try to avoid pressing the Side button or the Digital Crown accidentally when you press the Action button. Your Apple Watch will do whatever is assigned to the Action button if you happen to press another button at the same time, unless a button combination is configured.

Related Roundup: Apple Watch Ultra 3
Related Forum: Apple Watch

Top Rated Comments

Stiksi Avatar
39 months ago
This is certainly not ”extremely customizable” like it has been described over and over. ”Somewhat customizable” is more like it. If Apple would just get over itself and actually give us a Shortcuts system that is extensive and deeply integrated, that would make it a whole different thing but this is just typical Apple: it does exactly what was shown in the keynote and maybe a couple other things but that’s it. I mean it’s nice to have but if you’re going to add a whole extra button, maybe make it count a bit more.
Score: 5 Votes (Like | Disagree)
beanbaguk Avatar
39 months ago
I'm sorry. I can't get over this. As I've said before; Only Apple could successfully reinvent a button as a major feature! ?
Score: 3 Votes (Like | Disagree)
disquieted Avatar
39 months ago
I own one and love it. It was rugged enough to handle my lifestyle which includes walking the dog around the block twice a day and making my morning nitro cold brew in the kitchen...after 3 1/2 days, it still is holding up very well.
Score: 3 Votes (Like | Disagree)
ProfessionalFan Avatar
39 months ago

I'm sorry. I can't get over this. As I've said before; Only Apple could successfully reinvent a button as a major feature! ?
That's a take.

If they didn't add this new (useful) action button, people would be saying it is the same watch. Some would find something to complain about no matter what.
Score: 1 Votes (Like | Disagree)

Popular Stories

iOS 26 on iPhone Feature

Here's When iOS 26 Rolls Out Today in Every Time Zone [Update: Out Now!]

Monday September 15, 2025 12:00 am PDT by
Update 10:06 a.m.: iOS 26 is rolling out now, though it may take a bit for all users to see it, so keep checking! Today's the day! Apple is about to release iOS 26, which will deliver the biggest redesign since iOS 7 and bring a range of new features and improvements to iPhones worldwide. It's Apple's biggest software update of the year, and Apple announced at last week's iPhone event that...
iOS 26 Battery Glass Feature

Apple Says Installing iOS 26 Might Impact Battery Life

Monday September 15, 2025 10:56 am PDT by
In the iOS 26 release notes, Apple is warning iPhone users that installing the new software might have a temporary impact on battery life, which is normal. A new support document explains that major iOS updates require background setup like indexing data and files for search, downloading new assets, and updating apps. Further, Apple says that new features could require more resources,...
Tim Cook Rainbow

Apple Reportedly Plans to Launch These 10 Products in 'Coming Months'

Sunday September 14, 2025 8:45 am PDT by
Apple's annual September event is now in the rearview mirror, with the iPhone 17, iPhone 17 Pro, iPhone 17 Pro Max, iPhone Air, Apple Watch Series 11, Apple Watch Ultra 3, Apple Watch SE 3, and AirPods Pro 3 set to launch this Friday, September 19. As always, there is more to come. In his Power On newsletter today, Bloomberg's Mark Gurman said Apple plans to release many products in the...
AirPods Pro Firmware Feature

AirPods Pro 2 and AirPods 4 Get iOS 26 Features With New Firmware Update

Monday September 15, 2025 10:50 am PDT by
Apple today released updated firmware for the AirPods Pro 2 and the AirPods 4, introducing support for the new AirPods features that are included in iOS 26, iPadOS 26, and macOS Tahoe. The firmware has a build number of 8A356, and it replaces the current 7E93 firmware. With Apple's new software updates, the AirPods Pro 2 and the AirPods 4 support better audio quality for phone calls and...
iphone 17 lineup

iPhone 17 Models Launch on September 19 With These New Features

Friday September 12, 2025 7:58 am PDT by
Apple will launch its new iPhone 17 lineup and ultra-thin iPhone Air in stores on Friday, September 19, and the company has already shown off the new devices at its fall event, which ran with the the tagline "Awe dropping." The iPhone 17 series brings a host of new features and enhancements. Here's a rundown of the biggest upgrades and changes: iPhone 17 Display Changes The iPhone...
iOS 26 Feature

iOS 26 Available Now With These 8 New Features

Monday September 15, 2025 5:45 am PDT by
Following three months of beta testing, iOS 26 was released today, September 15. The update is compatible with the iPhone 11 series and newer, and it is available to install via the Settings app, under General → Software Update. Below, we have highlighted eight new features included in iOS 26. Even more new features and changes are outlined in Apple's release notes for the update. Some of ...
iPhone 17 Pro Air Boxes

iPhone Air and iPhone 17 Pro Boxes Revealed

Sunday September 14, 2025 1:36 pm PDT by
T-Mobile President Jon Freier today shared real-world photos of Apple's boxes for the iPhone Air, iPhone 17 Pro, and iPhone 17 models, which launch on Friday. Image Credit: Jon Freier Apple has typically included iPhone box renders in its product environmental reports, but it did not do so for the latest models. However, Apple's iPhone Upgrade Program page does offer some images of the boxes, ...