A mechanical watch is a small machine with hundreds of moving parts, running continuously for years, lubricated by oils measured in fractions of a drop. Servicing is what keeps that machine honest. It is also the ownership cost that catches people out, because it arrives years after the purchase and never at a convenient moment.
What follows is a practical account of when a watch needs attention, what a full service involves, how to choose between the manufacturer and an independent watchmaker, and how to plan for the expense rather than be ambushed by it. The principles apply equally to a Rolex, an Omega or something far more modest. Only the invoice changes.
How often does a watch really need servicing?
The conventional answer is every five to ten years for a mechanical watch, and that remains a reasonable planning assumption. It is worth understanding where the number comes from, though, because treating it as a deadline leads people to open watches that did not need opening and to ignore watches that were long overdue.
Service intervals exist because lubricants degrade. The oils and greases inside a movement sit on pivots, in jewel bearings, on the mainspring barrel wall and across the winding mechanism. Over time they migrate, thicken and dry. Once a bearing surface runs dry, metal works against metal and wear begins — and wear is what turns a routine service into a parts bill.
The calendar versus the evidence
The rigid five-year rule dates from an era of natural oils that oxidized relatively quickly. Modern synthetic lubricants are more stable and last considerably longer, which is why many watchmakers now advise servicing on evidence rather than on the calendar. A watch that keeps good time, winds smoothly, holds a full power reserve and still passes a pressure test is telling you something useful.
Evidence-based does not mean neglect. A watchmaker can put a watch on a timing machine in minutes and read its rate, its beat error and — most usefully — its amplitude, which is how far the balance wheel swings. Falling amplitude is the clearest early sign that lubrication is deteriorating, and it appears long before the watch runs badly enough for you to notice.
Where the calendar still rules
Two situations call for a fixed schedule regardless of how well the watch performs. The first is water resistance. Gaskets are rubber, rubber ages, and a case that was watertight five years ago may not be today. If you swim with your watch, have the seals pressure-tested annually — our dive watch buying guide explains why a depth rating is a condition rather than a permanent property. The second is a watch left unworn for long stretches. A stationary movement is not resting; its oils are settling and congealing in one position.
Quartz watches are a different question
A quartz watch needs less attention but is not maintenance-free. Replace the battery promptly when the watch stops, because a cell left to leak inside a movement can cause damage costing many times the price of the battery. Each change is also an opportunity to fit a fresh gasket and pressure-test the case, which is why it is worth having done properly rather than at a kiosk. If the difference between the two technologies is still fuzzy, watch movements explained covers it.
What a full service actually involves
A proper service is not a clean and a polish. The watchmaker removes the movement from the case and strips it to individual components — on a simple automatic that is well over a hundred parts, and on a chronograph considerably more. Each part is cleaned through several solutions in an ultrasonic bath, then dried.
Cleaning is the easy half. The skilled work is inspection: pivots examined for wear, jewel bearings for cracks, the mainspring for fatigue, the escapement for damage, and the winding mechanism for the worn teeth that make an automatic wind inefficiently. Anything out of tolerance is replaced. Reassembly follows with fresh lubricants, and this is where expertise shows: different contact points call for different oils in specific quantities, and over-oiling causes as many problems as under-oiling.
The watch is then regulated so that it keeps time consistently across the positions a wrist actually puts it in, not just dial-up on a bench. The case goes back together with new gaskets, the crown and pushers are checked, and the whole watch is pressure-tested, then run for several days and re-measured before it comes back. That sequence is many hours of skilled labor, which is the honest explanation for what a service costs.
What a service is not
A service does not make an old watch new, and it should not try. Case refinishing is a separate decision to make deliberately rather than accept as part of the package, because polishing removes metal and repeated refinishing softens the edges and bevels that give a case its shape. Nor does a service cover impact damage or water ingress — those are repairs, quoted separately.
Signs your watch is due
Most watches announce themselves well before they fail. The symptoms below are worth acting on rather than tolerating, because a watch running on dry bearings is wearing itself out while you wait.
| What you notice | What it usually means |
|---|---|
| Timekeeping has drifted noticeably from its old rate | Lubrication deteriorating, or the watch has been magnetized |
| Shorter power reserve — it stops overnight when it used to run for days | Mainspring or barrel wear, or thickened grease |
| Automatic winding feels less effective than it did | Worn or dry winding mechanism |
| A gritty or stiff feel when winding or setting | Dry keyless works; stop using it and have it looked at |
| Chronograph pushers feel heavy or the reset is imprecise | Chronograph mechanism needs attention |
| Condensation, moisture, a fogged crystal or dust on the dial | Failed seals — urgent, as moisture corrodes steel parts |
| A rattle, or a rotor you can hear spinning freely | Something is loose; stop wearing it |
A sudden change in rate deserves separating out: it is more often magnetism than wear, and magnetism is trivially fixed — a watchmaker demagnetizes a watch in minutes. Rule it out before assuming you need a full service, particularly if the watch lives next to a laptop or a magnetic phone mount.
Manufacturer service or independent watchmaker?
This is the decision that generates the most argument and the least clarity. Both routes are legitimate. They optimize for different things, and which one is right depends on the watch and on what you want back.
| Manufacturer service center | Independent watchmaker | |
|---|---|---|
| Parts access | Full access to genuine current parts | Varies by brand and by the watchmaker's accounts |
| Cost | Generally the higher option | Usually lower, and itemized |
| Turnaround | Often weeks, sometimes longer | Frequently faster |
| Warranty on the work | Typically a formal service warranty | Varies — ask, and get it in writing |
| Parts policy | May replace worn components as standard practice | Usually replaces only what is necessary, on your instruction |
| Case refinishing | Often included unless you decline it | Normally optional and discussed first |
| Vintage sympathy | Policies vary; parts may be updated to current spec | Specialists preserve original parts where possible |
| Communication | Through a service process | Direct, with the person doing the work |
When the manufacturer makes sense
Send the watch to the brand when parts availability is the binding constraint — a proprietary movement, an unusual complication, a ceramic bezel, a bracelet only the manufacturer supplies. Do the same if the watch is still inside its factory warranty, since outside work can affect that coverage, and if you intend to sell a modern piece where a documented factory service is what the next buyer will want to see.
When an independent is the better choice
A good independent watchmaker is the right answer more often than brand loyalty suggests. For vintage watches the argument is strong: an independent will preserve original components rather than substitute current-production equivalents, and originality is a real part of what a vintage watch is worth. Independents also give you control over what gets replaced, what gets left alone, and whether the case is touched at all. And for widely used sourced calibers — the kind found in plenty of excellent watches from Longines and Hamilton — parts are readily available and there is little advantage to going through the brand.
The difficulty is finding a good one. Look for formal qualifications, experience with your movement family, and a willingness to explain the work in detail; a watchmaker who is candid about what they can and cannot source is more trustworthy than one who promises everything.
What to ask before handing the watch over
- What does the quote include, and what is extra? Establish whether it covers a full strip-down or something lighter, and what happens if worn parts turn up.
- Will you contact me before replacing anything significant? The answer should be an unhesitating yes.
- Can I have the original parts back? Important on vintage and collectible references. Policies differ, so ask in advance rather than afterward.
- Will the case be polished? If you do not want it touched, say so in writing on the job sheet.
- What warranty covers the work, and for how long?
- Will the watch be pressure-tested, and will I get documentation?
- What is the realistic turnaround? Then plan for longer.
Budgeting for servicing
Servicing is a recurring cost of ownership, in the same category as tires on a car. The sensible approach is to find out what a service costs for your specific movement before you buy the watch, divide it across the expected interval, and decide whether that annual figure is comfortable. If it is not, the watch is more expensive than it looked.
Complexity drives the number more than anything else. A time-and-date automatic is straightforward; a chronograph adds a mechanism on top; a perpetual calendar is a different order of work entirely — our guide to watch complications explains what each one adds. Condition matters too, since a neglected watch needs parts rather than just lubrication, and precious-metal cases demand more careful handling.
The ratio nobody mentions
Here is the practical trap. Servicing costs roughly the same whether a watch is worth a few hundred dollars or several thousand, because the labor is similar. Our catalog spans $99 to $120,995 across 650 watches and 40 brands, and at the lower end of that range a full service can represent a meaningful fraction of what the watch is worth. That is not a reason to avoid inexpensive mechanical watches. It is a reason to think in total cost of ownership rather than sticker price.
It also shapes what to buy. Current Omega stock runs from about $1,000 to just under $30,000 and current Rolex stock from about $2,895 to just under $121,000, while Longines runs from about $395 to $5,550. Across all of them, a widely serviced automatic movement in a steel case is the cheapest watch to keep running, and an unusual complication in gold the most expensive. Neither is the better buy in the abstract, but you should know which you are choosing.
Servicing and resale value
A documented service history helps when you sell, for the same reason it helps with a car: it removes a question from the buyer's mind. Keep every invoice with the box and papers, and make sure the paperwork records what was done rather than merely that something was.
There is a subtlety on older watches. A service that swapped original components for current-production parts can reduce what a collectible reference is worth, even though the watch now runs better. On a vintage piece, keep the original parts, keep the documentation that says what changed, and choose a watchmaker who understands the difference. Our notes on watches and value retention cover why originality carries so much weight.
Buying with servicing in mind
When you shop pre-owned, service history is both a negotiating point and a warning sign. A watch with a recent, documented service from a competent watchmaker is worth more than one without, and a seller who is vague about when the movement was last opened is telling you to budget for one immediately. Ask directly, and read the answer rather than the enthusiasm around it — our guide to buying a pre-owned luxury watch sets out the wider process.
Every watch we sell is inspected before listing, guaranteed genuine under our Authenticity Guarantee, and covered by a 2-year movement warranty — which exists precisely so the first years of ownership are not a gamble on someone else's maintenance. Between services, the habits that extend intervals are simple, and our watch care guide covers them.
Servicing is not a tax on owning something nice. It is the reason a well-made mechanical watch can still be running in fifty years, which is more than can be said for most things bought new today. Browse the full catalog, or get in touch if you want to know what a particular reference is likely to ask of you over the years you own it.