How Often Should You Service a Luxury Watch?

A mechanical watch is a precision instrument in which hundreds of individually finished components run continuously against one another, lubricated by tiny quantities of oil, inside a case expected to keep dust and moisture out for years at a time. Maintenance is neither optional nor cosmetic: it decides whether the watch keeps time, whether it survives a knock or a swim, and what it is worth when it eventually changes hands. The question everybody asks first is how often. The honest answer is that there is no single correct interval, and the general figures quoted online are not the one that applies to your watch.

Why servicing exists at all

Two processes drive the need, and they run whether the watch is on your wrist or in a drawer. The lubricants degrade: they thin, migrate away from the surfaces they were placed on, and eventually dry out. And the components wear, because metal running on metal always does, however finely finished. While the oil is doing its job the wear is negligible. Once the oil stops working, wear accelerates sharply and moves out of the lubricant, which is cheap to replace, and into the pivots, jewels and wheels, which are not. A service is fundamentally an intervention to keep the wear in the cheap part of that sequence, which is also why a service deferred is rarely a service avoided — it is usually a more expensive service later.

The interval is a manufacturer figure, not a general rule

Manufacturers publish recommended intervals for specific movements, those intervals differ substantially between brands, and several have lengthened as synthetic lubricants have improved. That is the only figure worth acting on, and it lives in your manufacturer's own servicing documentation or in the warranty paperwork that came with the watch. A number quoted for one reference tells you very little about another, and a number quoted with no reference at all tells you nothing. We do not print an average here on purpose: an unsourced interval is precisely the sort of figure a reader acts on, and getting it wrong in either direction costs money — too soon and you are paying for unnecessary work on a watch that will be opened, too late and the damage has already moved into the parts that are expensive.

What actually shifts your interval in either direction

• How much you wear it. A watch worn daily and kept running is generally in a more stable state than one that sits for years, but a watch worn daily in salt water, sport or heat is not.
• Where it lives. A hot loft, a damp safe or a windowsill in direct sun ages gaskets and oils faster than a stable, dry drawer.
• Whether it gets wet. Swimming, showering and hot tubs all work on the gaskets, and soap works on them harder than water does.
• Its age and history. A watch with no known service history is an unknown, whatever its behaviour on the wrist suggests.
• What is inside it. A simple three-hand automatic and a perpetual calendar chronograph are not the same maintenance proposition, and neither are they the same invoice.

The symptoms that mean now, not at the next interval

Several signs mean the watch should go in without waiting for anything. It is running noticeably fast or slow against its own rated accuracy — not against your phone over an hour, but against itself over several days. The power reserve has shortened materially, so a watch that used to run overnight now stops. The rotor makes a new noise, or the winding feels gritty rather than smooth. There is any moisture or condensation under the crystal, which is an emergency rather than an observation, because water in a movement does damage by the day. Or the watch has taken a genuinely hard impact. In every one of those cases the cost of acting this week is a fraction of the cost of waiting for a schedule to come round.

Water resistance is a service item, not a specification

The depth rating stamped on a case is a statement about the gaskets when they were new. Rubber gaskets harden and shrink with age, heat, soap and pressure, and a watch rated for diving twenty years ago may not be safe in a shower today. Gaskets are replaced during a full service and the case is then pressure-tested afterwards, which is the step that turns the rating back into a fact. If you swim in the watch, have the water resistance tested annually rather than relying on the number on the dial, and always check that a screw-down crown is fully home before the watch goes anywhere near water. Most water damage we hear about is a crown, not a gasket.

Vintage watches follow a different logic

For an older watch that has not been serviced in a long time, the calculation changes shape. Dried lubricant does more damage than slightly degraded lubricant, because a dry pivot cuts into its jewel rather than turning in it. If you acquire a vintage piece with no recent service history, have it inspected before wearing it regularly, however well it appears to be running — running well is not evidence of being lubricated. Discuss parts before any work begins, too, because originality drives vintage value more than condition does, and a well-meaning service that replaces an original dial, hands or crown can remove a substantial share of what the watch is worth. Say, in writing, that no cosmetic part is to be replaced without your approval.

What a full service actually involves

The movement is completely disassembled, every component is cleaned ultrasonically, and each part is inspected under magnification for wear or damage. Worn components are replaced, gaskets are renewed, and fresh lubricants are applied in specified quantities at specified points — that last step is where the skill sits, because the oils are not interchangeable and the quantities are measured in fractions of a drop. The movement is reassembled, timed and regulated in multiple positions, the case is reassembled and pressure-tested, and the watch is then run for several days under observation before it is returned. On a complicated movement this is many hours of highly skilled work by a person who trained for years, which is what the invoice reflects.

Polishing: say no, in writing

Most service centres will refinish the case and bracelet as a matter of course, and on a valuable watch that is frequently the most damaging thing that happens to it. Polishing removes metal. It rounds the sharp edges between brushed and polished surfaces, softens case lines that were originally crisp, and cannot be undone at any price. Instruct in writing, on the service form itself, that the case and bracelet are not to be polished or refinished. If you do want it tidied, ask for the lightest possible intervention and confirm exactly what will be done before you hand the watch over. Photograph the case sides and bracelet first; it costs nothing and settles any later disagreement in seconds.

Manufacturer service versus an independent watchmaker

For high-value pieces and anything still under warranty, the manufacture is usually the safer choice. For out-of-warranty watches where you have a trusted relationship, a skilled independent frequently produces the better outcome — provided they can get parts.

Parts availability is the question that decides it

Several major manufactures restrict spare parts to their own network and to authorised watchmakers. That single policy is the practical constraint behind the whole manufacturer-versus-independent debate, because an excellent watchmaker who cannot obtain a specific balance staff or bridge cannot finish the job, whatever their skill. Before committing, ask the independent directly whether they can source parts for your exact reference and what they do if they cannot. A straight, specific answer to that question is the single best test of whether you have found the right watchmaker; a vague one is your answer too.

Cost structure, and how to get a real quote

Servicing is quoted by movement complexity rather than by watch value, so a simple three-hand automatic sits at one end of the range and a perpetual calendar chronograph or a minute repeater sits far off the other. Expect the quote after inspection rather than before, because nobody can price the work honestly without opening the watch, and be sceptical of anyone who does. Ask for the quote to itemise labour, parts and any refinishing separately, so that you can decline the third line without argument. Ask what guarantee covers the work and how long it runs. And ask for the old parts back, which is normal practice and a reasonable check on what was actually replaced.

Records, documentation and what it is worth later

Keep every service invoice, every dated receipt and the original papers together, because a documented service history is worth real money at resale and its absence invites a discount. A buyer choosing between two identical references will pay more for the one that can show when it was last serviced, by whom, and what was done. This matters most on exactly the watches where it is most often neglected — see our Patek buying guide and the Royal Oak guide, both of which turn on provenance and paperwork as much as on condition. If you think of watches as part of a wider holding, our note on investment-grade pieces covers how the same documentation logic applies elsewhere.

Daily care between services

Most of what damages watches happens well outside the workshop. Do not operate a chronograph or set the date underwater. Avoid setting the date in the hours around midnight on most movements, when the date-change mechanism is engaged. Keep magnets at a distance — laptops, speakers, magnetic phone cases and bag clasps all magnetise a balance quickly, and a magnetised watch runs wildly fast until it is demagnetised, which is a quick and inexpensive fix rather than a service. Rinse a dive watch in fresh water after the sea. Store watches away from heat and damp, and away from safes that sit against a cold exterior wall where condensation forms.

Winders, storage and long periods unworn

An automatic watch left unworn simply stops, which does it no harm whatsoever; starting it again is a matter of winding and setting. Winders are a convenience for calendar watches you would rather not reset, not a maintenance requirement, and a cheap winder running constantly at high speed is worse for the watch than leaving it still. For long-term storage, keep watches dry, at a stable temperature, and check on them occasionally — a watch nobody has looked at for three years is how condensation under a crystal goes unnoticed until it has etched a dial.

Frequently asked questions

How often should a mechanical watch be serviced?

On the interval your manufacturer publishes for your movement, not on a general rule. Published intervals differ substantially between brands and several have lengthened as synthetic lubricants improved, so a figure quoted for one reference tells you very little about another. Symptoms override any schedule: moisture under the crystal, a shortened power reserve, gritty winding or a hard knock mean now.

What happens if you never service a mechanical watch?

The lubricants thin, migrate and eventually dry out. While the oil is working, wear is negligible; once it stops, wear moves quickly from the lubricant — which is cheap to replace — into pivots, jewels and wheels, which are not. A service is an intervention to keep the wear in the cheap part of that sequence.

Is water resistance permanent?

No. The depth rating stamped on a case describes the gaskets when they were new. Rubber gaskets harden and shrink with age, heat, soap and pressure. Gaskets are replaced during a full service and the case is then pressure-tested; if you swim in the watch, have the water resistance tested annually rather than relying on the number on the dial.

Should you let a service centre polish the case?

Usually not, and you have to say so in writing on the service form. Polishing removes metal, rounds the crisp edges between brushed and polished surfaces, and cannot be undone. On a watch you may one day sell, an unrequested refinish is often the most expensive thing that happens to it.

Manufacturer service or an independent watchmaker?

The manufacture uses genuine parts, protects any remaining warranty and produces documentation the secondary market recognises, but can be slow and more willing to replace components. A skilled independent offers faster turnaround and direct conversation with the person doing the work. The question that settles it is parts: ask the independent whether they can source components for your exact reference, and what they do if they cannot.

Before you book a service

No service interval, price band or turnaround time is asserted as a fact anywhere above, because we could not verify one at source for your watch and an unsourced figure is the one thing a reader would act on. The interval for your reference comes from your manufacturer's own servicing documentation; the price comes from a written quote after inspection; the turnaround comes from the watchmaker in writing before you hand the watch over. Reviewed by the NorwegianSpark SA editorial team.