Watches are a portable clock that displays the time, day, date, month, year, time zone and sometimes more details related to time. Some watches are loaded with features above and beyond the time of day. Two of the most popular watch features are a calculator and a personal calendar. Watches today are mainly worn on the wrist, in the past watches were worn in the pocket with a loop chain or even around the neck on a necklace. Some of the most popular watches are made by companies like Seiko, Timex and Casio; these company names are popular because they produce the lower cost affordable everyday watches. Companies like Rolex and Movado are your more top of the line Luxury watches.