Description: Omaha Overview | An informative introduction to Omaha, Nebraska, Discovering Omaha: Nebraska's Urban Oasis | Informational Overview and Guide to Omaha Nebraska, Omaha Beach : The D-Day Cameraman Who Filmed Assault Waves on June 6, 1944 - WWII Then & Now
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A watch is a small timepiece intended to be carried or worn by a person. It is designed to keep working despite the motions caused by the person's activities. A wristwatch is designed to be worn on a 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-powered clocks, which appeared as early as the 14th century. The first watches were strictly mechanical, driven by clockwork . As technology progressed, mechanical devices, used to control the speed of the watch, were largely superseded by vibrating quartz crystals that produce accurately timed electronic pulses. Some watches use radio clock technology to regularly correct the time. The first digital electronic watch was developed in 1970.
Most inexpensive and medium-priced watches, used mainly for timekeeping, are electronic watches with quartz movements . Expensive collectible watches, valued more for their elaborate craftsmanship, aesthetic appeal and glamorous design than for simple timekeeping, often have purely mechanical movements and are powered by springs, even though these movements are generally less accurate and more expensive than electronic ones. Various extra features, called " complications ", such as moon-phase displays and t