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2. COSC - Wikipedia

   en.wikipedia.org/wiki/COSC

   The Contrôle officiel suisse des Chronomètres(COSC), the Official Swiss Chronometer Testing Institute, is the institute responsible for certifying the accuracy and precision of Swiss watches. Background. [edit] Founded in its current form in 1973, the COSC is a Swiss non-profit organizationthat tests chronometersthat are Swiss Made.

3. Chronometer watch - Wikipedia

   en.wikipedia.org/wiki/Chronometer_watch

   Chronometer watch. A chronometer ( Ancient Greek: χρονόμετρον, khronómetron, "time measurer") is an extraordinarily accurate mechanical timepiece, with an original focus on the needs of maritime navigation. In Switzerland, timepieces certified by the Contrôle Officiel Suisse des Chronomètres ( COSC) may be marked as Certified ...

4. Langendorf Watch Company SA - Wikipedia

   en.wikipedia.org/wiki/Langendorf_Watch_Company_SA

   A Lanco watch with the futuristic Tissot Astrolon movement (caliber 2250) was also produced in the 1970s. During SSIH's financial problems in 1981, the Lanco brand name was sold. As of 1998, new Lanco watches are being sold in South Africa by S. Bacher & Company, under license from The Swatch Group.

5. Tissot - Wikipedia

   en.wikipedia.org/wiki/Tissot

   Tissot SA. Tissot SA ( French pronunciation: [ti'so]) is a Swiss luxury watch brand owned by the Swatch Group. [ 1] The company was founded in Le Locle, Switzerland by Charles-Félicien Tissot and his son, Charles-Émile Tissot, in 1853. [ 2][ 3] Tissot is not associated with Mathey-Tissot, another Swiss watchmaking firm.

6. Automatic quartz - Wikipedia

   en.wikipedia.org/wiki/Automatic_quartz

   Automatic quartz is a collective term describing watch movements that combine a self-winding rotor mechanism [1] (as used in automatic mechanical watches) to generate electricity with a piezoelectric quartz crystal as its timing element. Such movements aim to provide the advantages of quartz without the inconvenience and environmental impact of ...

7. Hamilton Watch Company - Wikipedia

   en.wikipedia.org/wiki/Hamilton_Watch_Company

   The Hamilton Watch Company is a Swiss manufacturer of wristwatches based in Bienne, Switzerland. Founded in 1892 as an American firm, the Hamilton Watch Company ended American manufacture in 1969, shifting manufacturing operations to the Buren factory in Switzerland. Through a series of mergers and acquisitions, the Hamilton Watch Company ...