A watch is a small watch intended to be worn or worn by a person. It is designed to continue working despite the movements caused by the person's activities. A wristwatch is designed to be worn around the wrist, attached by a watch strap or other type of bracelet. A pocket watch is designed for a person to carry in a pocket.
Watches evolved in the 17th century from spring-loaded watches, which appeared as early as the 14th century. For most of its history the watch was a mechanical device, driven by the clockwork mechanism, driven by winding a main spring, and keeping time with a swinging swing. In the 1960s the electronic quartz watch was invented, which was powered by a battery and kept time with a vibrant quartz crystal. By the 1980s the quartz watch had taken over most of the mechanical watch market.
Nowadays the cheapest and medium price watches, used mainly for the watch, have quartz movements. The most expensive collectible watches, most valued for their elaborate craftsmanship, their aesthetic appeal and their glamorous design that by the simple handling of the time, usually have traditional mechanical movements, although they are less accurate and more expensive than the electronic ones. Sometimes several additional features are included, called "complications", like the lunar screens and the different types of tourbillon. Modern clocks often show the day, date, month and year, and electronic clocks can have many other functions. Time-related functions such as timers, chronographs and alarm functions are common. Some modern designs incorporate calculators, GPS and Bluetooth technology or have heart rate monitoring capabilities. Some watches use radio clock technology to regularly correct the time.
Events in the 2010 include smartwatches, which are elaborate electronic computer devices designed to be carried on a wrist. They usually incorporate clock functions, but these are only small fractions of what the smartwatch can do. The study of watchmaking is known as horology.