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Quartz is a mineral used in watches to regulate timekeeping by generating a consistent frequency when an electric current is applied, enabling precise and reliable time measurement.

Standard quartz watches typically achieve ±15 seconds per month accuracy. Higher-quality quartz movements like Seiko's 9F achieve ±10 seconds per year. Thermocompensated quartz reaches ±10 seconds per year. This far exceeds mechanical movements (±4-6 seconds per day for COSC-certified chronometers).
Some collectors view quartz watches as lacking the mechanical artistry and craftsmanship of hand-assembled mechanical movements. The 'quartz crisis' of the 1970s also damaged Swiss industry pride. However, quality quartz like Grand Seiko Spring Drive, Breguet Tradition, and vintage high-grade quartz are respected and collected.
Standard quartz watch batteries last 2-3 years. Higher-end quartz movements can achieve 3-5 years. Eco-drive and solar-powered quartz watches eliminate battery changes by recharging through light. Kinetic quartz (like Seiko's Kinetic) use wrist movement to generate electricity, storing power in a capacitor.

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