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2. Quartz clock - Wikipedia

   en.wikipedia.org/wiki/Quartz_clock

   Quartz clocks and quartz watches are timepieces that use an electronic oscillator regulated by a quartz crystal to keep time. This crystal oscillator creates a signal with very precise frequency , so that quartz clocks and watches are at least an order of magnitude more accurate than mechanical clocks .

3. Rolex Oysterquartz - Wikipedia

   en.wikipedia.org/wiki/Rolex_Oysterquartz

   Japanese watchmakers supplied the world market with large quantities of quartz watches. [1] Rolex responded by introducing a new line of watches, producing the Datejust Oysterquartz. It faced the Asian markets seeking to keep alive interest in Swiss watchmaking, an industry that seemed dominated by the Japanese quartz watch.

4. Astron (wristwatch) - Wikipedia

   en.wikipedia.org/wiki/Astron_(wristwatch)

   Quartz Movement of the Seiko Astron, 1969 (Deutsches Uhrenmuseum, Inv. Inv. 2010-006) The Astron wristwatch, formally known as the Seiko Quartz-Astron 35SQ, was the world's first "quartz clock" wristwatch. It is now registered on the List of IEEE Milestones as a key advance in electrical engineering.

5. Quartz crisis - Wikipedia

   en.wikipedia.org/wiki/Quartz_crisis

   Quartz movement of the Seiko Astron, 1969. The quartz crisis (Swiss) or quartz revolution (America, Japan and other countries) was the advancement in the watchmaking industry caused by the advent of quartz watches in the 1970s and early 1980s, that largely replaced mechanical watches around the world.

6. History of watches - Wikipedia

   en.wikipedia.org/wiki/History_of_watches

   The first generation of electric-powered watches came out during the 1950s. These kept time with a balance wheel powered by a solenoid, or in a few advanced watches that foreshadowed the quartz watch, by a steel tuning fork vibrating at 360 Hz, powered by a solenoid driven by a transistor oscillator circuit.

7. 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 ...