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  2. Citizen Watch - Wikipedia

    en.wikipedia.org/wiki/Citizen_Watch

    Citizen launched the world's first multi-band atomic timekeeping watch in 1993 and has remained a pioneer of this field. Synchronized to atomic clocks, these watches are accurate to within one second in one hundred thousand years. [7] The Skyhawk A-T line features radio-controlled timekeeping.

  3. Quartz clock - Wikipedia

    en.wikipedia.org/wiki/Quartz_clock

    In laboratory settings atomic clocks had replaced quartz clocks as the basis for precision measurements of time and frequency, resulting in International Atomic Time. By the 1980s, quartz technology had taken over applications such as kitchen timers , alarm clocks , bank vault time locks , and time fuzes on munitions, from earlier mechanical ...

  4. Radio clock - Wikipedia

    en.wikipedia.org/wiki/Radio_clock

    A modern LF radio-controlled clock. A radio clock or radio-controlled clock (RCC), and often colloquially (and incorrectly [1]) referred to as an "atomic clock", is a type of quartz clock or watch that is automatically synchronized to a time code transmitted by a radio transmitter connected to a time standard such as an atomic clock.

  5. Armitron - Wikipedia

    en.wikipedia.org/wiki/Armitron

    Armitron is a watch brand manufactured by E. Gluck Corporation, headquartered in Little Neck, New York. [1] It was founded in 1975 by Eugen Gluck. As of 1999, Armitron had the fifth largest share of all watch purchasers, by brand, in the United States.

  6. E. Gluck Corporation - Wikipedia

    en.wikipedia.org/wiki/E._Gluck_Corporation

    E. Gluck Corporation is an American watch manufacturer headquartered in Little Neck, New York. [1] [2] It was founded in 1956 by Eugen Gluck.E. Gluck Corporation manufactures watches under two flagship proprietary brands, Armitron and Torgoen.

  7. List of atomic clocks - Wikipedia

    en.wikipedia.org/wiki/List_of_atomic_clocks

    18 cesium atomic clocks and 4 hydrogen maser clocks Cs, H National Institute of Information and Communications Technology; Koganei, ... DOST-PAGASA Juan Time [27]

  8. Atomic clock - Wikipedia

    en.wikipedia.org/wiki/Atomic_clock

    This scale allows for time comparisons between different clocks in the laboratory. These atomic time scales are generally referred to as TA(k) for laboratory k. [61] Coordinated Universal Time (UTC) is the result of comparing clocks in national laboratories around the world to International Atomic Time (TAI

  9. Eco-Drive - Wikipedia

    en.wikipedia.org/wiki/Eco-Drive

    Citizen Eco-Drive Thermo watches were introduced in 1999 and use the temperature difference between the wearer's arm and the surrounding environment as a power source. The rare Eco-Drive Thermo watches use the Seebeck effect to generate thermo electricity that powers the electronic movement and charges the secondary power cell. In the sun or in ...