|Homepage - Contents - J. Quartz Watches with Micromotor and Hands, 3. Longines Ultraquartz||< Previous page | Next page >|
|1967||During the exhibition 'Montres et Bijoux', the first working prototype of an oversized Longines Ultraquartz is displayed in October of this year.|
|1969||On August 20th a prototype of the Longines Ultra-Quartz can be seen on display in Geneva, Switzerland. Its size had been successfully reduced to normal proportions.|
|1970||The Longines Ultraquartz is presented at the Basle Fair.|
|1971||The Longines Ultraquartz with a cybernetic system, caliber 6512, goes on sale in Switzerland,the only cybernetic watch ever to be produced. The project 'Hour-Glass' comes to an end. There were two models: gold (Ref.no. 8483) and steel (Ref.no. 8482) both fitted with cal. 6512. The IC was not used in this quartz watch. Instead separate micro-sized electronic parts were used (14 transistors, 19 resistors, 7 capacitors). The electronic circuit was developed in co-operation with Golay S.A. in Lausanne.|
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