Unique Woman Quartz Watch

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Quartz clock Facts

A quartz clock is a clock that uses an electronic oscillator that is regulated by a quartz crystal to keep time. This crystal oscillator creates a signal with very precise frequency, so that quartz clocks are at least an order of magnitude more accurate than good mechanical clocks. Generally, some form of digital logic counts the cycles of this signal and provides a numeric time display, usually in units of hours, minutes, and seconds. Since the 1970s, they have become the most widely used timekeeping technology.

First European quartz clock for consumers “Astrochron”, Junghans, Schramberg, 1967 (German Clock Museum, Inv. 1995-603)
 

First quartz wristwatch movement, used in the Seiko Astron, Caliber 35A, Nr. 00234, Seiko, Japan, 1969 (German Clock Museum, Inv. 2010-006)
 

Basic quartz wristwatch movement. Bottom right quartz crystal oscillator, left button cell watch battery. Top right oscillator counter, top left the coil of the stepper motor that powers the watch hands.

Picture of a quartz crystal resonator, used as the timekeeping component in quartz watches and clocks, with the case removed. It is formed in the shape of a tuning fork. Most such quartz clock crystals vibrate at a frequency of 32,768 Hz.