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  2. Mechanical watch - Wikipedia

    en.wikipedia.org/wiki/Mechanical_watch

    The hand-winding movement of a Russian watch. A mechanical watch is a watch that uses a clockwork mechanism to measure the passage of time, as opposed to quartz watches which function using the vibration modes of a piezoelectric quartz tuning fork, or radio watches, which are quartz watches synchronized to an atomic clock via radio waves.

  3. Movement (clockwork) - Wikipedia

    en.wikipedia.org/wiki/Movement_(clockwork)

    Each specific watch movement is called a caliber. [3] The movement parts are separated into two main categories: those belonging to the ébauches and those belonging to the assortments. [2] In watch movements the wheels and other moving parts are mounted between two plates, which are held a small distance apart with pillars to make a rigid ...

  4. List of ETA Movements - Wikipedia

    en.wikipedia.org/wiki/List_of_ETA_Movements

    ETA Mechanical movement features Caliber Hours Minutes Seconds Date Day Hacking seconds 1 ... 1120 (manual wind, sub-second, 15/17 jewels, 18000vph, reserve 42h)

  5. Automatic watch - Wikipedia

    en.wikipedia.org/wiki/Automatic_watch

    An automatic watch, also known as a self-winding watch or simply an automatic, is a mechanical watch where the natural motion of the wearer provides energy to wind the mainspring, making manual winding unnecessary if worn enough. [1]

  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. Amfibia - Wikipedia

    en.wikipedia.org/wiki/Amfibia

    Amfibia (often spelled "Amphibia") is a Russian dive watch model. It uses a mechanical watch movement available in both manual and automatic winding forms. The Amfibia was developed at the Vostok watch factory in 1967. [1] It later gained worldwide popularity due to its reliable reputation and low cost. [1]

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