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Asheikm
2537
Feb 5, 2019
In addition to what has been mentioned: The "Quartz" moniker for battery powered movements comes from their timekeeping element; the resonant frequency of a quartz crystal, cut in a precise manner and subjected to a certain voltage, is used as the time regulating element. Mechanical movements use an escapement, a gear with a locking action, as the regulating element; without the escapement, all of the potential energy in the coiled mainspring will be transferred to the gear train and the hands will spin uncontrollably until the energy is depleted. There are also hybrid movements. Seiko Kinetic movements are quartz regulated , and use an electrochemical cell to store the energy produced by a mechanical rotor (dynamo). Seiko Spring Drive (used in Grand Seiko watches) uses a mainspring to store energy and has a mechanical rotor assembly, but uses an electromagnetic braking system (glide wheel) in lieu of a traditional escapement.
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