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  2. List of ETA Movements - Wikipedia

    en.wikipedia.org/wiki/List_of_ETA_Movements

    Date display in big window, ETACHRON with finetiming device 2897 [18] Yes Yes sweep second Yes No Yes Yes ETACHRON Power-reserve display 2894-2 [19] Yes Yes small second Yes No Yes Yes ETACHRON Chronograph mechanism with cams, 2 push buttons, chronograph 60 seconds, dragging counters 30 minutes and 12 hours 2834-2 [20] Yes Yes sweep second Yes ...

  3. Mathey-Tissot - Wikipedia

    en.wikipedia.org/wiki/Mathey-Tissot

    Mathey-Tissot no longer produces its own watch movements in house. Instead, the company customizes mechanical and quartz watches with movements sourced from others. [4] Its logo is similar to the "peace symbol" of the Campaign for Nuclear Disarmament, but turned upside-down, with the words Mathey-Tissot in manuscript, above the printed words "since 1886".

  4. Tissot - Wikipedia

    en.wikipedia.org/wiki/Tissot

    The Tissot company was also the first to make watches out of plastic (Idea 2001 in 1971), stone (the Alpine granite RockWatch in 1985), mother of pearl (the Pearl watch in 1987), and wood (the Wood watch in 1988). [2] Tissot introduced its first tactile watch, with "T-Touch," technology in 1999; watches containing this technology have touch ...

  5. Balance wheel - Wikipedia

    en.wikipedia.org/wiki/Balance_wheel

    A balance wheel, or balance, is the timekeeping device used in mechanical watches and small clocks, analogous to the pendulum in a pendulum clock.It is a weighted wheel that rotates back and forth, being returned toward its center position by a spiral torsion spring, known as the balance spring or hairspring.

  6. COSC - Wikipedia

    en.wikipedia.org/wiki/COSC

    That is, the watch should not delay at all, and the upper limit is 5 seconds fast in 24 hours. The criterion of resistance to magnetic fields is innovative. Until now, the ISO 764 Horology — Magnetic resistant watches standard defines that an antimagnetic watch must support a magnetic field of 4,800 A/m, which corresponds to 60 gauss. METAS ...

  7. Chronometer watch - Wikipedia

    en.wikipedia.org/wiki/Chronometer_watch

    Inside a chronometer mechanism (c. 1904)A chronometer (Ancient Greek: χρονόμετρον, khronómetron, "time measurer") is an extraordinarily accurate mechanical timepiece, with an original focus on the needs of maritime navigation.

  8. History of timekeeping devices - Wikipedia

    en.wikipedia.org/wiki/History_of_timekeeping_devices

    Watches were worn during the Franco-Prussian War (1870–1871), and by the time of the Boer War (1899–1902), watches had been recognised as a valuable tool. [184] Early models were essentially standard pocket watches fitted to a leather strap, but, by the early 20th century, manufacturers began producing purpose-built wristwatches.

  9. Rolex Datejust - Wikipedia

    en.wikipedia.org/wiki/Rolex_Datejust

    In The Informers some of the cast wear Datejust watches. [16] Paul Newman wears a full stainless steel 36mm Datejust in The Color of Money. [17] Alin Busi owns this watch model. Harrison Ford sports a Datejust 36mm in the 1980s movie Frantic, which featured a white Roman numeral dial, white gold bezel and stainless steel jubilee bracelet and ...