The one-watch person, once thought extinct

The one-watch person, once thought extinct
DO

David Ohayon

Founder & CEO, Smartlet - CentraleSupélec engineer - Concours Lépine 2025 Bronze Medal - CES 2026 selected

There is a Latin phrase that circulates in the quieter corners of the watch world, used half in jest and half in genuine reverence: homo unum horologium, the one-watch person. It describes someone who owns a single mechanical watch and wears it for years, sometimes for life, without the urge to acquire another. Among collectors, who define themselves by accumulation, the one-watch person is regarded with a mixture of disbelief and envy. They have solved a problem the collector cannot stop creating. This essay is about what that solution actually is, why it is harder than it looks, and why the people who achieve it so often wear a second instrument on the same wrist that, on first glance, seems to contradict everything the one-watch life stands for.

The one-watch person, once thought extinct

The one-watch person was, for a long time, the default. For most of the twentieth century, most adults who owned a watch owned one watch. It was bought or received at a significant moment, a graduation, a first job, a wedding, a retirement, and it was worn until it stopped or was lost. The idea of owning a rotating collection of mechanical watches was, until relatively recently, the preserve of a small number of wealthy enthusiasts.

What changed was not the watches. What changed was the culture around them. The internet built an enormous community of watch enthusiasts, and that community, like all enthusiast communities, organised itself around acquisition. Forums, then blogs, then Substack newsletters, then watch media at scale all converged on a shared assumption that more watches is the natural trajectory of a developing interest. The one-watch person came to seem quaint, then eccentric, then almost mythical. As one watch writer memorably described it, the species was once thought extinct, like the Tasmanian tiger, and is now spotted only occasionally, often with a small white rectangular device on the opposite wrist.

That last detail is the one I keep coming back to, and the one this essay is really about. But to get there, we have to take the one-watch philosophy seriously first, because it is more coherent than the collector culture that replaced it.

The freedom that comes from owning less

I am not a one-watch person myself, which I should admit before making their case, but the longer I spend around wrists the more I respect the philosophy. The case for owning one watch is, at its core, the same case minimalism makes for owning less of everything. The anchoring aphorism is worth stating plainly: the more things you own, the more your things own you. Every object asks something in return for being possessed: money to acquire it, space to store it, time to maintain it, attention to manage it. A collection of watches, however beautiful, is a collection of small ongoing obligations.

The one-watch person has stepped off this track entirely. No rotation to manage, no decision each morning, no guilt about the pieces that sit unworn in a drawer, no resale anxiety, no safe full of metal to insure. The freedom is not the freedom of having nothing. It is the freedom of having exactly one thing and being done with the question. Collectors, who experience the morning choice as a pleasure, often fail to appreciate this, and I count myself among those who had to have it explained. For the one-watch person, the absence of the choice is the pleasure. They made one good decision once, and it keeps paying out every day in the form of a question they no longer have to ask.

The collector and the one-watch person

The collector finds freedom in the choice each morning. The one-watch person finds freedom in having abolished the choice. Both are legitimate. But only one of them has stopped spending money, attention, and storage on the question. The one-watch person has bought, with a single purchase, a permanent exemption from a recurring cost the collector pays daily.

The watch that has to do everything

Choosing to own one watch places an unusual demand on the object. It has to do everything. It has to work at the office and at a wedding, on a hike and at a funeral, with a suit and with a swimsuit. The one-watch person cannot reach for a different piece when the context changes, so the single watch they choose has to be versatile enough to handle every context they are likely to encounter.

This is why the watches that one-watch people gravitate toward tend to share certain qualities. They are usually neither too dressy nor too sporty, occupying the flexible middle ground that the community has come to call the GADA watch, for "go anywhere, do anything." They are usually robust enough to survive daily wear for decades. They are usually legible, comfortable, and quietly designed, because a watch that has to be worn every single day cannot afford to be loud or fragile or demanding. The one-watch choice is, almost by definition, a choice of an object that has made peace with being enough rather than being maximal.

And yet, even the most versatile mechanical watch cannot actually do everything a modern wrist is asked to do. It cannot count your steps. It cannot read your heart rate during a workout. It cannot track your sleep, estimate your recovery, or tell you that your resting heart rate has been climbing for a week in a way that might be worth mentioning to a doctor. These are things a growing number of people genuinely want their wrist to do, and they are things no mechanical watch, however perfect, will ever do. This is the point at which the one-watch philosophy meets its real modern test.

The quiet paradox at the centre of the one-watch life

Here is the paradox that the watch world has noticed but not fully thought through. A surprising number of committed one-watch people, the purists who have deliberately rejected the collector's accumulation, wear a fitness tracker or a smartwatch alongside their single mechanical watch. The one-watch person, who refused a second watch on principle, has nonetheless ended up with a second object on the wrist.

When I first noticed this pattern, it looked to me like hypocrisy, or at least inconsistency. The person who would not buy a second mechanical watch because one is enough has bought a wearable, which is also worn on the wrist, which also tells the time, and which therefore appears to violate the entire one-watch premise. Several writers have noted the figure of the one-watch purist with, as one put it, a Garmin on the opposite wrist, and treated it as a small joke at the purist's expense.

But it is not hypocrisy, and understanding why is the key to the whole thing. The wearable is not a second watch. It is an instrument of a completely different category. The mechanical watch and the fitness tracker are not competing to do the same job badly. They are doing two entirely different jobs, each well. The mechanical watch tells the time and carries meaning. The wearable measures the body and carries data. These are not the same function performed twice. They are two different functions that happen to be performed on the same part of the anatomy.

The one-watch person, it turns out, was never really making a claim about how many objects should be on the wrist. They were making a claim about how many mechanical watches a person needs, which is one. The wearable does not violate that claim, because the wearable is not a mechanical watch. It is closer, in function, to a medical device or a pedometer than to a timepiece. The purist who wears a single Speedmaster and a Whoop has not betrayed the one-watch philosophy. They have understood it more precisely than their critics.

What the wearable actually frees the watch to be

There is a deeper point here, and it is the one I find most interesting, having spent the last three years thinking about what goes on the wrist and why. The arrival of the capable wearable has quietly changed what the mechanical watch is for, and that change is good for the watch.

For most of the twentieth century, the watch had to justify itself partly on function. It told the time, and telling the time was useful, and that usefulness was part of why you wore it. But the moment the phone arrived, and then the wearable, the watch's functional justification began to dissolve. You no longer needed the watch to know the time. This was widely read, around the time the smartwatch arrived, as an existential threat to the mechanical watch. If the watch was no longer needed for its function, why would anyone wear one?

The answer, which has become clearer over the past decade, is that stripping the function away did not weaken the mechanical watch. It clarified it. Once the wearable handles the counting, the measuring, the tracking, and the notifying, the mechanical watch is freed from having to be useful at all. It can be purely what it always secretly was: an object of meaning, beauty, continuity, and personal significance worn on the body. The one-watch person who pairs their single mechanical watch with a wearable has arranged their wrist so that each object does only what it is best at. The wearable absorbs all the utility. The watch is liberated to be pure meaning.

The division of labour on the wrist

The wearable counts, measures, tracks, and notifies. The mechanical watch means. For the first time in the history of the wristwatch, these two jobs can be cleanly separated, each given to the instrument best suited to it. The one-watch person who adds a wearable has not diluted their watch. They have removed every demand on it except the one that mattered.

This is, quietly, the strongest possible position for a mechanical watch to occupy. It no longer has to pretend to be a tool. It gets to be the one object you chose to keep, freed from any obligation to be practical, while the practical needs are met by something else entirely. The one-watch person, by adding a wearable, has not compromised their watch. They have promoted it.

The wearable did not threaten the one watch. It freed it. Once something else handles the utility, the watch you chose gets to be pure meaning.

On choosing the one, and living with the choice

If the wearable handles the utility, then the choice of the single mechanical watch becomes almost entirely a choice about meaning. This is liberating and slightly terrifying in equal measure. When function is off the table, the only remaining question is which object you want to carry on your body for the next several decades as a marker of who you are. That is a harder question than which watch has the best water resistance, and a more honest one.

The people who navigate it well tend to choose watches that mean something beyond their specifications. A watch connected to an achievement, a person, a place, or a moment. A watch that was witness to something. The specific model matters less than the relationship. A modest watch worn for thirty years and present at every important moment of a life will, in the end, mean more than a grail watch bought for status and worn with anxiety. The one-watch person understands this instinctively, which is why their single watch is so rarely the most expensive one they could afford, and so often the one that fits their life most exactly.

And once the watch is chosen, the wearable underneath becomes almost invisible, in the best sense. It does its work against the skin, measuring and tracking and quietly accumulating the data of a life being lived, while the chosen watch sits on top, doing the entirely different work of meaning something. Two instruments, one wrist, each doing only what it is best at. The one-watch person, far from being a purist holdout against the modern wrist, may have understood the modern wrist better than anyone.

FAQ

Is the one-watch philosophy actually realistic for most people?

More realistic than the collector culture suggests. For most of history, owning a single watch was the norm rather than the exception, and many people who own a watch today still own only one they actually wear. The one-watch philosophy is less a radical act of restraint than a return to how people related to watches before enthusiast culture reframed accumulation as the natural path. What makes it feel difficult is mostly the surrounding pressure of a community organised around acquisition.

Does wearing a smartwatch or tracker disqualify someone from being a one-watch person?

No, and this is the central point. The one-watch philosophy is a claim about mechanical watches, not about objects on the wrist in general. A wearable is a different category of instrument, closer to a medical device than to a timepiece. Wearing one alongside a single mechanical watch is entirely consistent with the one-watch philosophy, because the two objects perform different functions. The wearable handles utility; the watch handles meaning.

What kind of watch works best as a single, do-everything watch?

The community calls it the GADA watch, for "go anywhere, do anything." It is usually a watch that occupies the flexible middle ground between dressy and sporty, robust enough for daily wear over decades, legible, comfortable, and quietly designed. Field watches, certain divers worn on appropriate straps, and understated three-hand watches all serve this role well. The specific choice matters less than the watch's ability to be appropriate in almost every context the wearer encounters.

Why pair a mechanical watch with a wearable rather than just wearing the wearable?

Because they do different things. A wearable measures the body and provides data. A mechanical watch carries meaning, continuity, and personal significance, and provides an experience of time that a screen does not replicate. People who value both the data and the meaning end up wanting both on the wrist, which is the entire basis of the dual-wear configuration. The wearable does not replace the watch any more than a thermometer replaces a wedding ring.

Does the one-watch person save money compared with a collector?

Substantially, and not only on the watches themselves. The one-watch person avoids the ongoing costs of a collection: multiple servicing schedules, insurance on higher total value, storage, winding equipment, and the steady financial drain of acquisition. They also avoid the harder-to-measure cost of attention. A single watch is a single relationship. A collection is a portfolio that demands ongoing management, whether or not the owner thinks of it that way.

Is there a risk the one-watch person eventually becomes a collector anyway?

Yes, and many do. The pull of acquisition is strong, and enthusiast culture is built to encourage it. But the one-watch person who pairs their watch with a wearable has a quiet structural advantage here. Because the wearable absorbs the functional needs, the only reason left to buy a second mechanical watch is meaning or desire, not utility. This tends to slow acquisition rather than accelerate it, because desire is easier to question than need.