Quartz vs. Automatic: Which watch is more accurate?
This is a question we are regularly asked, whether at a trade show booth or among enthusiasts during a discussion. At first glance, the answer seems simple. Yet, it deserves a closer look. Because between theoretical precision and actual use, the criteria change.
Quartz: Electronic Regularity
Quartz watches operate using a battery. This powers an electronic circuit that sends energy to a tiny quartz crystal. The crystal vibrates at an ultra-precise frequency. These vibrations are converted into regular impulses that move the hands.
This provides formidable precision. According to some studies, on average, a quartz watch deviates by less than 15 seconds per month. So you can wear it without ever worrying about setting it. Even left in a drawer, it will remain perfectly on time for weeks, even months.
Some brands go even further. Thermocompensated calibers from Citizen or Grand Seiko show a deviation of only plus 5 seconds per year.
Automatic: A Beating Heart, Less Exact.
Automatic watches operate "the old way." A spring is wound thanks to wrist movements or manually via the crown. This spring powers a set of gears, levers, and mechanical regulators. The whole system beats at a precise rhythm that can be adjusted but remains sensitive to contingencies.
A well-regulated automatic watch remains generally accurate, but its daily deviation is normal. In general, it ranges between minus 10 and plus 20 seconds per day, depending on the caliber, its age and maintenance, and also depending on the models.
These watches have a mechanism that gives the impression of life. And this imprecision is part of their charm. It reacts to your rhythm, your movements, the ambient temperature, its position on the table or on the wrist.
The Technical Verdict
If we talk about pure precision, measured chronometric performance: quartz wins. This is a fact. No standard mechanical movement, even well-regulated, can compete with the stability of a quartz watch.
But it is not always precision that guides an enthusiast's choice. A watch also remains an object that lives, so most people still gravitate towards mechanical watches.
Another Idea of Precision
What many enthusiasts look for in a mechanical watch is not accuracy to the second, but a presence. The pleasure of winding a watch in the morning, hearing the click of the rotor, observing the second hand glide smoothly across the dial.
Mechanics is a poetry of gears. Quartz is a flawless, or almost flawless, technology. Each has its place.
And seen through the loupe?
At Eagle Eye Watches, we have seen all kinds of watches, whether mechanical or quartz. What we notice is that the beauty of a dial, the finish of a hand, or the quality of a typeface has nothing to do with the nature of the movement. A quartz Seiko can be as moving to photograph in macro as a Zenith El Primero.
What the X6 Loupe reveals are these details that even the trained eye cannot perceive without help. The brushing of a case, the cut of an index, a discreet engraving... Whether the watch is quartz or mechanical ultimately doesn't matter in this regard. What matters is the care taken.
To summarize
For effortless daily precision: quartz is unbeatable. For a stronger connection with the object, a mechanical history, and palpable emotion: automatic reigns supreme.
It's not about choosing a side, but about understanding what you are looking for in a watch. And knowing how to appreciate both worlds. And Eagle Eye does not recommend one team over the other, but equality in the vision of detail for each watch.