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Seiko introduced the world's first quartz watch in 1969. The watch is regulated by a quartz crystal, which is also responsible for its accuracy. The quartz crystal moves with a constant rate of vibration under the influence of current. Oscillators were developed through the physics and ideas of this mechanism, which standardized accurate time measurement. Seiko's quartz structure is a guarantee of quality and ensures reliable and accurate operation for its owner for many years.