Who Invented the First Watch in the World?

Early wrist watches were only worn by women. Wrist watches from this time period were not as reliable as pocket watches and easily ruined by rain or dirt. Improvements to the design of wrist watches were made at the beginning of the 20th century. During World War I, soldiers wore wrist watches in the trenches. It became fashionable for men to wear wrist watches after the war when the soldiers returned home. Previously, men only wore pocket watches.