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  2. Automatic quartz - Wikipedia

    en.wikipedia.org/wiki/Automatic_quartz

    As of 2007, Seiko has sold more than eight million automatic quartz watches. [2] The different calibres of Kinetic watches currently are relatively large and heavy, weighing in at 1/3 of a pound (150 grams) or more on many models. Therefore, most Seiko Kinetic watches are only available in a men's size. Movement calibers: 1M20; 3M21 3M22 ...

  3. Seiko - Wikipedia

    en.wikipedia.org/wiki/Seiko

    Seiko put a second crystal in the watch that is linked with a processor that detects the change in temperature and signals the main oscillator to compensate. The result was a huge improvement in the watch's accuracy from five seconds per month to five seconds per year. Kinetic watches were introduced by Seiko in 1986 at the Basel Fair Trade ...

  4. Lithium-titanate battery - Wikipedia

    en.wikipedia.org/wiki/Lithium-titanate_battery

    Seiko uses lithium-titanate batteries in its Kinetic (automatic quartz) wristwatches. Earlier Kinetic watches used a capacitor to store energy, but the battery provides a larger capacity and a longer service life. A technician can easily replace the battery when its capacity eventually deteriorates to an unacceptable level.

  5. Spring Drive - Wikipedia

    en.wikipedia.org/wiki/Spring_Drive

    The Seiko Spacewalk is a limited edition Spring Drive model, designed specifically for use in space Spring Drive is a name given to a series of watch movements produced by Epson in Shiojiri . The concept of using a mainspring to power a quartz timing package was first conceived in 1977 by Yoshikazu Akahane (赤羽 好和) at Suwa Seikosha [ 1 ...

  6. Watch - Wikipedia

    en.wikipedia.org/wiki/Watch

    In 1959 Seiko placed an order with Epson (a subsidiary company of Seiko and the 'brain' behind the quartz revolution) to start developing a quartz wristwatch. The project was codenamed 59A. By the 1964 Tokyo Summer Olympics, Seiko had a working prototype of a portable quartz watch which was used as the time measurements throughout the event.

  7. Automatic watch - Wikipedia

    en.wikipedia.org/wiki/Automatic_watch

    In a mechanical watch the watch's gears are turned by a spiral spring called a mainspring.In a manual watch, energy is stored in the mainspring by turning a knob, the crown, on the side of the watch.

  8. Alba (watch) - Wikipedia

    en.wikipedia.org/wiki/Alba_(watch)

    Using Seiko's own family of movements but with modern styling designed to appeal to younger customers, Alba watches are primarily aimed at Asian and Middle Eastern markets in the hope of creating long-term loyalty to the Seiko group as these customers' purchasing power increases. [3] The word 'Alba' translates to 'dawn' in Italian, and Spanish. [4]

  9. List of Japanese inventions and discoveries - Wikipedia

    en.wikipedia.org/wiki/List_of_Japanese...

    This is a list of Japanese inventions and discoveries.The Japanese have made contributions across a number of scientific, technological and art domains. In particular, the country has played a crucial role in the digital revolution since the 20th century, with many modern revolutionary and widespread technologies in fields such as electronics and robotics introduced by Japanese inventors and ...

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