Pocket watch

A pocket watch is a timepiece that is kept in the pocket rather than worn on a wrist (wristwatch). It is thought to be invented by Peter Henlein.
The pocket watch usually has a chain to connect to a certain clothing, so the watch would not fall out of the pocket and get broken. This watch was popular before the wristwatch become popular. Because of wristwatches, the pocket watch became less common and popular. Still, some people today wear pocket watches, and a golden pocket watch is often a token of a person's retirement. Until the middle of the XIX century, most pocket watches were wound up by means of a separate key, which was hung on a chain next to the watch.