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  2. Casio CA-53W - Wikipedia

    en.wikipedia.org/wiki/Casio_CA-53W

    The Casio CA-53W is a digital calculator watch manufactured by the Japanese electronics company Casio and was introduced in 1988 [1] as a successor to the CA-50. It became famous for its appearance in the American science fiction films Back to the Future Part II (1989) and Back to the Future Part III (1990) [2] and later for appearing in the American TV series Breaking Bad (2008–2013).

  3. Watch strap - Wikipedia

    en.wikipedia.org/wiki/Watch_strap

    A leather watch strap with a butterfly closure Four analog wristwatches for men with variants of the widespread metal watch strap made from stainless steel, the two in the middle being of the most common type. A watch strap, watch band, watch bracelet or watch belt is a bracelet that straps a wrist watch onto the wrist. [1]

  4. Casio Wave Ceptor - Wikipedia

    en.wikipedia.org/wiki/Casio_Wave_Ceptor

    A Casio G-Shock GW-9200J "Riseman" watch incorporating Multi-band 6 technology. Casio Multi-Band 6 watches can tune to any of the six signals of the low frequency radio time signals. [4] [5] Some of the Casio G-Shock line of watches have Multi-Band 6 technology. The earlier Multi-Band 5 system could not receive the signal of the Chinese time ...

  5. Pocket watch - Wikipedia

    en.wikipedia.org/wiki/Pocket_watch

    Some watches of this period had the setting-arbor at the front of the watch, so that removing the crystal and bezel was necessary to set the time. Watch keys are the origin of the class key, common paraphernalia for American high-school and university graduation. Many keywind watch movements make use of a fusee, to improve isochronism. The ...

  6. Quartz clock - Wikipedia

    en.wikipedia.org/wiki/Quartz_clock

    It is also possible for quartz clocks and watches to have their quartz crystal oscillate at a higher frequency than 32 768 (= 2 15) Hz (high frequency quartz movements [4]) and/or generate digital pulses more than once per second, to drive a stepping motor powered second hand at a higher power of 2 than once every second, [5] but the electric ...

  7. 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.