What is the problem with Apple Watch suddenly calling the police and then shutting down?

It may be that AppleWatch has encountered some unexpected events. If the sos help button is pressed or the battery is exhausted, an alarm will be issued. If the AppleWatch user presses the sos help button, the device will give an alarm and the system will start the countdown. If the user doesn't cancel the alarm before the countdown is over, it will automatically send out emergency help information and accompany the alarm.