Mothership, covering an accident that happened in Singapore:

The motorcyclist, named Muhammad Fitri, fell off his bike after colliding with a van at Ang Mo Kio.

While lying on the ground, he saw the vehicle drive off before losing consciousness, he told Chinese daily Lianhe Wanbao.

And:

Fitri said that his Apple’s smart watch detected a hard fall and promptly sent a message to his emergency contacts, which included his girlfriend. The smart watch also called for an ambulance.

And:

Fitri could have missed the golden hour of rescue if not for the smart watch’s function.

Another great Apple Watch rescue story.