A pocket watch is a small, portable timekeeping device designed to be carried in a pocket. Typically round and encased in metal, it features a dial with numbers and hands that indicate the time. Pocket watches were popular from the 16th century until the early 20th century, before wristwatches became more common. These timepieces often have intricate designs and can be wound manually or automatically. Many pocket watches are considered collectibles and can be valuable, especially those made by renowned manufacturers like Patek Philippe or Vacheron Constantin. They symbolize craftsmanship and elegance in horology.