Quartz watch

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Quartz watches are timepieces that use an electronic oscillator regulated by a quartz crystal to keep time. This crystal oscillator creates a signal with very precise frequency, so that quartz clocks and watches are at least an order of magnitude more accurate than mechanical clocks. Generally, some form of digital logic counts the cycles of this signal and provides a numerical time display, usually in units of hours, minutes, and seconds.


Quartz watches can be divided into digital quartz electronic watches, pointer quartz watches, automatic quartz watches and light-powered watches, and working time is about 1-4 years.


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