Pioneers in Quartz Crystal Technology and their influence on LED watches by Jon Eton copyright 1999 revised 2003 All rights reserved Close up photo of a Statek Crystal Close up photo of a Statek Crystal in a LED watch module All LED watches use a quartz crystal as a time base It is one of the most important components of

analog quartz movement but illuminate the dial with colored LEDs I can t decide if they re cool or too tacky for my taste I think that it depends on the color they re currently displaying I really like the way it looks when the watch is showing a solid blue or orange hue but I don t really care for the rainbow color cycling effect

A large quantity of advertisement material was also produced surely worth collecting too Picture For example this Picture from a Pulsar brochure shows views of the production

The Swiss company Fortis sold the Quartz Leader in the mid 1970s The module the watch used is a Swiss development but rarely used in other LED watches Photos courtesy Peter Wenzig

Photos courtesy Damien Mattei

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Lanco Alarm Quartz LED Uhr . Große LED Alarmuhr der Schweizer Firma Langendorf Watch Co. in Langendorf, etwa 1976. Das verwendete Modul stammt von der amerikanischen Firma ...

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digital LED electronic watches. ... Peter Wenzig notes, "First LCD watch. In early spring 1971 BWC Biel/Swiss and Optel USA agreed upon a cooperation for the introduction of a solid ...

... digital watch displays. A popular novelty when they were first introduced in 1972, LED watches fell out of favor with consumers by the end of the decade. Battery ~ Quartz ...

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Two types of quartz watches without moving parts will be described. In this paragraph: Watches with a light emitting diode or LED display. ...

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Quartz watches actually use quartz crystals to keep time. How can they be so accurate? ... Initially, these watches had red LED displays and they cost around $500 in the United ...

The Swiss company Fortis sold the Quartz Leader in the mid-1970s. The module the watch used is a Swiss development, but rarely used in other LED watches. ...

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