Mechanical watches dominated portable timekeeping for centuries, but the arrival of quartz technology changed what people could expect from a wristwatch: far greater everyday accuracy, fewer moving parts and eventually much lower manufacturing costs.
Why quartz was such a breakthrough
A quartz watch uses a battery to send electricity through a tiny quartz crystal. The crystal oscillates at a stable frequency, and the electronic circuit counts those oscillations to regulate the display of time. A common modern watch frequency is 32,768 Hz. Because that frequency can be divided electronically down to a one-second signal, quartz movements can keep time with remarkable consistency.
1969 and the start of a new era
Quartz timekeeping existed before it reached the wrist, but 1969 became a landmark year for the commercial quartz wristwatch. Seiko introduced the Quartz Astron 35SQ in Japan on 25 December 1969. The original Astron was expensive and produced in very small numbers, but it demonstrated that electronic quartz regulation could work in a wearable watch.
The technology developed rapidly during the 1970s. Integrated circuits improved, components became easier to manufacture at scale and quartz watches moved from technological showpieces toward mass-market products. The result was a major transformation of the global watch industry.
Why 32,768 Hz became familiar
Many quartz wristwatches use a tuning-fork-shaped crystal oscillating at 32,768 times per second. That number is 2 to the power of 15, which makes it convenient for a digital divider circuit to repeatedly halve the frequency until it reaches one pulse per second.
Quartz did not make mechanical watches obsolete
Quartz became the practical choice for millions of people, but mechanical watchmaking survived and developed a different appeal. Today the two technologies coexist. Quartz is valued for accuracy, convenience and affordability, while mechanical watches are often appreciated for their engineering, craftsmanship and connection to traditional watchmaking.
A quartz Seiko in the Sekund collection
The watch pictured here is not the original 1969 Astron. It is a later Seiko Quartz 2A22-0010 currently offered by Sekund, used as an example of how quartz technology eventually became part of everyday watchmaking. Its compact design is far removed from the experimental character and price of the earliest quartz wristwatches, which is precisely what makes the quartz story so significant.
From an expensive technological milestone to reliable watches worn around the world, quartz did more than introduce a new movement. It changed the expectations of an entire industry.