okiboy novelties and collectibles

Quartz Watches

クオーツ時計 (Kuōtsu tokei)


Electronic movements, also known as quartz movements, have few or no moving parts, except a quartz crystal which is made to vibrate by the piezoelectric effect. A varying electric voltage is applied to the crystal, which responds by changing its shape so, in combination with some electronic components, it functions as an oscillator. It resonates at a specific highly stable frequency, which is used to accurately pace a timekeeping mechanism. Most quartz movements are primarily electronic but are geared to drive mechanical hands on the face of the watch to provide a traditional analog display of the time, a feature most consumers still prefer. In 1959 Seiko placed an order with Epson (a daughter company of Seiko and the 'brain' behind the quartz revolution) to start developing a quartz wristwatch. The project was codenamed 59A. By the 1964 Tokyo Summer Olympics, Seiko had a working prototype of a portable quartz watch which was used as the time measurements throughout the event. See "Watch". Wikipedia. Retrieved 2014-11-05.

Elgin Quartz Westminister Chime 17" Old-Fashioned Wall Clock
CASIO G-SHOCK 2688 GW-330A BLACK/GOLD DIGITAL WATCH WAVE CEPTOR/TOUGH SOLAR
SEIKO 3E23-0A71 WOMENS STAINLESS STEEL/GOLD PLATE DAY/DATE QUARTZ WATCH/NEW BATT



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