You may feel it’s quaint to talk about user-wound, mechanical watches. Certainly when you buy a watch, you’ll likely just type the kind that needs a battery change now and then. Wear a watch like that, and it pretty much runs on its own, without fuss. But some are still attracted to a mechanical watch, meaning that this kind of timepiece is far from extinct.
How does a mechanical watch actually work, though? Its power stems from the tiny metal mainspring, which curls inside a cylindrical barrel. This barrel’s teeth interact with and move various gears throughout the watch. As the mainspring is wound tight, it gains tension and mechanical energy, which pushes out in a way that turns the gears.
Separate gears move the minute hand around the watch completely in one hour, and take the hour hand fully around in twelve hours. And in some watches, still more gears countdown sixty seconds, taking the second hand through a full turn in one minute. The regular movement of these parts creates the ticking sound in a mechanical watch.
The implication of winding the mainspring tightly, then using that force to push all those gears, is that eventually its tension diminishes and it loosens. Naturally, this is when the wearer has to rewind the spring and recreate the tension. There’s even a bit of an art to this: they should wind the watch only until they feel resistance. Any more winding, and the spring becomes too tight.
Some might wonder about the ongoing attraction of a mechanical watch. After all, a quartz watch with a battery keeps more accurate time. And it is, furthermore, less expensive than a mechanical. So what’s the draw?
For most mechanical fans, it’s the hint of “romance.” A quartz watch feels unexciting: it slows down, and you just pull out one module (the battery) and slot in another. But a mechanical watch, to keep accurate time, must be finely crafted so the parts work together with precision. A flaw in a gear or in the mainspring, and the whole process collapses.
The independence of the self-powering watch makes it seem almost indifferent to, and distant from, its wearer. But a watch that needs winding requires interaction. In a strange way, people who love mechanical watches feel an almost personal relationship with their timepieces, combined with a love of craftsmanship, and maybe an affinity with history and tradition. Non-winding watches may be very practical and efficient – but a well-crafted mechanical watch dazzles and seduces.