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Quartz Watches
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The quartz analog watch is an electronic watch that uses a piezoelectric quartz crystal as its timing element, coupled to a mechanical movement that drives the hands. The first prototypes were made by the CEH research laboratory in Switzerland in 1962. The first quartz watch to enter production was the Seiko 35 SQ Astron, which appeared in 1969. There are also several variations of the quartz watch as to what actually powers the movement. There are solar powered, kinetically powered, and battery powered. Solar powered quartz watches are powered by available light. Kinetic powered quartz watches are powered by the motion of the wearer's arm turning a rotating weight, which in turn, turns a generator to supply power. The third and most common power source is the battery. Watch batteries come in many forms, the most common of which are silver oxide and lithium.
