Shortcuts
Developer Apple Inc
One of the differences between the Apple Watch Ultra and other models is the Action button. It stands proudly on the left-hand side in emergency orange and one click is enough to start an action instantly. In the settings you are only given a handful of options to map the Action button to, but crucially the list includes Shortcuts. With this one option, and a little bit of time on your part, you can build shortcuts that can be enabled with a push of the button and swap them around as your needs change. Apple has included the actions that will be vital in emergency situations, such as the Siren, and you can add to the list in almost any way you like. Not all shortcuts work, but the flexibility on offer to you should be more than enough.