If Apple Watch detects a hard fall, it can help connect you to emergency services if needed.
Here's how it works
If Apple Watch SE, Apple Watch Series 4 or later, or Apple Watch Ultra or later detects a hard fall while you're wearing your watch, it taps you on the wrist, sounds an alarm, and displays an alert. You can choose to contact emergency services or dismiss the alert by pressing the Digital Crown, tapping Close in the upper-left corner, or tapping "I'm OK."
If your Apple Watch detects that you're moving, it waits for you to respond to the alert and won't automatically call emergency services. If your watch detects that you've been immobile for about a minute, it will make the call automatically.1
