Kenetic, Automatic what is the difference?

Thread: Kenetic, Automatic what is the difference?

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  1. #1
    Member wuyeah's Avatar
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    Kenetic, Automatic what is the difference?

    Hello guys,

    Seiko has Kenetic watch, many other watches has Automatic movement. Both don't use batter and you wear they charge. To me they are the same....no? What is the difference?

    Kenetic = japanese, Automatic = swiss?


  2. #2
    Member CycloneFever's Avatar
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    Re: Kenetic, Automatic what is the difference?

    Someone will correct me if I'm wrong:

    A kinetic stores energy in a charged battery which actually runs the watch (quartz movement). An automatic stores energy in a wound spring which actually runs the watch (mechanical movement). Both of these use the movement of a worn watch (or one in a winder) as a source of energy. There is also a manual with which one manually winds a spring that runs a mechanical movement.

  3. #3
    Member JohnF's Avatar
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    Re: Kenetic, Automatic what is the difference?

    Hi -

    CycloneFever is correct: the kinetic uses the movement that the watch goes through in the course of normal use to convert random movement to rotary movement which in turn generates an electrical current adequate to drive a quartz movement. Such a watch, when fully "charged", can run for several months before the charge becomes inadequate.

    An automatic transforms that rotary movement to the mainspring of the watch, which runs a mechanical movement. When this one is taken off under the same conditions, it will run down within a couple of days.

    There are others: there is, for instance, Seiko's spring drive, which is similar to the kinetic but the seconds hands sweep without discrete stops in a complete analogue movement. There are also pure quartz with analog and digital displays, as well as one watch company that drives a digital electronic display with an automatic movement.

    Then there are the vintage automatics, which in at least one case (no pun intended) transferred the mechanical energy not via a rotor, but rather by an weight moving on a single axis (think weight connected on a small rail moving between the 6 and 12 and driving a ratchet that wound the watch), as well as bumper automatics, where the rotor had limited movement and were stopped using a mechanism similar to the bumper/spring on a bumper car.

    And then there's the tuning fork watches, which vibrate at 300 Hz or more and transfer the movement of the tuning fork via a very fine, robust pawl and gear system to a modified normal gear train.

    Any others? Probably, but I don't remember them or know them.

    JohnF
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