The first alarm clock could only ring at 4 AM.

The first alarm clock could only ring at 4 AM.

The first alarm clock could only ring at 4 AM.

The first American alarm clock was made in 1787 by Levi Hutchins of New Hampshire.

He had made this device only for himself, and it started at 4 am only to wake him up to his job.

The French inventor Antoine Radier first patented an adjustable mechanical alarm clock in 1847.

Next Fact: In 2012, Apple sold 340,000 iPhones every day.

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