San Francisco, Jul 1 (IANS): A man's life in the US was saved when, unknown to him, his Apple Watch detected him falling and called emergency services automatically, the media reported.

Apple Watch has saved lives before and sometimes surprises its wearers by detecting problems they are unaware of.

A man has been rescued by the Summerfield Fire Department before he even knew his Watch could send an emergency message, AppleInsider reported.

"The first thing I asked (the officer) was, 'How did you guys know to get here?' and he said, 'Your watch sent us a message'," 78-year-old Mike Yager told Fox News.

Yager had reportedly fallen hard in his driveway, breaking his nose, and passing out. When he didn't respond to his Apple Watch, it automatically called 911.

"(Apple Watch is) kind of expensive," continued Yager, "but I think it's well worth it if you are over 65... you definitely need to do something like (get a Watch)."

The man's wife, Lori Yager, told Fox News that the Summerfield Fire Department officer showed her his log saying the alert had come from her husband's Apple Watch.

"I was speechless, I didn't know what to say," she said.

"I wasn't due to come home for another couple of hours and who knows what would have happened when I got home," she added.

The ability to detect a fall is automatically enabled in the Apple Watch Series 4, or later, if the owner is over 65.