A quartz movement is a battery-powered watch movement that uses the piezoelectric resonance of a precisely cut quartz crystal, oscillating at 32,768 Hz, to regulate timekeeping. The crystal's stable frequency is divided down by an integrated circuit to one pulse per second, which drives a stepping motor or, in fully digital designs, a liquid-crystal display. Quartz movements are accurate to within seconds per month under ordinary conditions, an order-of-magnitude improvement over the best conventional mechanical chronometers. Their commercial introduction in 1969 reshaped the global watch industry within a decade and remains the dominant timekeeping technology by volume today.

How a quartz movement keeps time

The heart of the movement is a small tuning-fork-shaped quartz crystal cut along specific crystallographic axes to maximise frequency stability across temperature. When voltage from the battery is applied, the piezoelectric property of quartz causes the crystal to vibrate mechanically; the vibration in turn generates an alternating voltage that the integrated circuit reads as a clock signal. The 32,768 Hz frequency is chosen because it is exactly 2¹⁵ Hz, allowing the IC to divide the signal down to a precise one-pulse-per-second output using fifteen binary divider stages.

In an analogue quartz watch, the one-second pulse drives a Lavet-type stepping motor, which advances the seconds hand one degree per pulse through a gear train to the minute and hour hands. Digital quartz watches read the pulse directly into the display driver. Battery life ranges from one to several years for analogue quartz, longer for digital and solar-charged movements.

Origins and the Quartz Crisis

Seiko introduced the first commercial quartz wristwatch, the Astron, on Christmas Day 1969 in Tokyo. The Astron's accuracy of plus or minus five seconds per month surpassed the best mechanical chronometers, and its price — initially comparable to a small car — fell rapidly through the early 1970s as production scaled and integrated circuit costs collapsed. By the mid-1970s, quartz movements at affordable price points were available from Seiko, Citizen, Casio, and the American Bulova Accutron, and Swiss makers found themselves outflanked.

The resulting collapse — known as the Quartz Crisis or Quartz Revolution depending on perspective — devastated traditional Swiss watchmaking. Swiss watch employment fell from approximately 90,000 in 1970 to under 30,000 by the mid-1980s, and many historic houses closed or merged. The recovery began with the formation of SMH (later the Swatch Group) in 1983 and the launch of the Swatch quartz watch as a fashion accessory, alongside a deliberate Swiss repositioning of mechanical watchmaking as a luxury and heritage segment.

Variants and high-grade quartz

Standard quartz movements use a 32,768 Hz crystal at room temperature without active compensation. Thermo-compensated quartz movements add temperature sensors and adjustment circuitry to correct for the crystal's slight frequency drift across temperature, achieving accuracy of plus or minus ten seconds per year or better. Examples include Citizen's Chronomaster, the Grand Seiko 9F calibres, and the Longines VHP and Breitling SuperQuartz lines.

Spring-drive movements, developed by Seiko, combine a mechanical mainspring power source with a quartz-regulated electromagnetic brake on the glide wheel. The result is a movement with the energy density of a mechanical calibre and the timekeeping accuracy of a quartz movement, with a smoothly gliding seconds hand rather than a stepping one. Solar-charged and kinetic-charged quartz movements eliminate battery replacement by harvesting light or wrist motion to charge a rechargeable cell.

In the trade

Quartz movements dominate global watch production by volume — by some estimates, over 90 per cent of watches sold worldwide use quartz technology. Mechanical movements retain prestige in the luxury and high jewellery segments, where heritage, craftsmanship, and the visible animation of a mechanical calibre are valued for their own sake. The Skyjems trade view is straightforward: for accurate everyday timekeeping at any price point, quartz is the rational choice; for collector and heritage pieces, mechanical work justifies its premium on grounds other than timekeeping precision. Both technologies coexist in the contemporary market, and serious clients often own examples of each.

Further reading

• Victoria and Albert Museum — twentieth-century watch history
• British Museum — clocks and watches reference
• GIA Gems & Gemology — horological technology coverage