No need to worry - you can cancel the emergency.

To cancel an emergency, press the Emergency Help Button again until you see the “Cancel Emergency?” screen. The watch will ask if you received help or still need help. If you indicate you no longer need help, it will stop all first responders and emergency contacts from coming to your aid. 

If you do not cancel your emergency promptly on the watch, the operator will call you on the phone line you provided when you registered.  You can tell the operator at that time to cancel the emergency if you do not need help.

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