|Homepage - Contents - J. Quartz Watches with Micromotor and Hands, 4. Girard-Perregaux||< Previous page | Next page >|
|1970||At the Basle Fair of 1970, Girard-Perregaux of La Chaux-de-Fonds, Switzerland, shows a prototype of their quartz watch 'Elcron' with two batteries and a visible quartz bar. This watch was developed in co-operation with Thomson-C.S.F. of Paris France, Motorola USA and Jaeger-LeCoultre, Switzerland.|
|1972||Girard-Perregaux shows for the first time, again at the Basle Fair, its commercial quartz watch caliber GP 350 with one battery and a packed crystal, an IC of SC and a stepping motor of Socrem. The Elcron wins the accuracy competition at the 'Observatoire de Neuchâtel'. Total production consisted of approximately 50,000 pieces, including the calibers that were derived from it. Derived calibers: 351, 352, 353 and 354. Jaeger-LeCoultre sold this watch under the name 'Master-Quartz' and Favre Leuba under the name 'Quartz Raider'.|
|1976||The very small GP 641 is introduced at the Basle Fair. It had a frequency of 32 kHz, generated by a tuning fork quartz.|
Copyright © by Pieter Doensen
All rights reserved. No part of this work may be reproduced or used in any forms or by any means - graphic, electronic or mechanical, including (but not limited to) photocopying or information storage and retrieval systems - without written permission from the copyright holder.