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A mechanical watch is a machine. It contains dozens or hundreds of moving parts, lubricated with oils that degrade over time, regulated by a balance spring thinner than a human hair. Left unserviced, the oils dry out, metal surfaces wear against each other, and accuracy deteriorates. Eventually, components fail. Servicing is what keeps a mechanical watch running correctly for decades, and understanding how it works is part of responsible ownership.
Quartz watches need less attention, but they are not maintenance-free either. This guide covers what servicing involves, how often it should happen, what it costs across major brands, and how to decide where to have the work done.
What Happens During a Service
A full mechanical service follows a standard sequence regardless of the brand. The watchmaker disassembles the movement completely, separating every component down to the individual screws and jewels. Each part is inspected under magnification for signs of wear, corrosion, or damage. Worn components are replaced. The parts are then cleaned in an ultrasonic bath, dried, and re-lubricated with fresh oils applied to specific points in precise quantities.
After reassembly, the movement is regulated. The watchmaker adjusts the rate to bring timekeeping within acceptable tolerances, typically checking the watch in multiple positions (dial up, dial down, crown up, crown down, crown left) and at different states of wind. A well-regulated watch after service should keep time within a few seconds per day.
The case and bracelet receive attention too. Gaskets that maintain water resistance are inspected and replaced if necessary. The case may be polished to remove scratches, though this is optional and some owners prefer to preserve the original surface which can sometimes boost resale value. The crystal is checked for damage. The bracelet is cleaned, and stretched links may be addressed. After everything is reassembled, the watch undergoes a water resistance test (if applicable) and a final timing check over several days.
For a quartz watch, servicing is simpler. The battery is replaced, the movement is checked for proper function, the gaskets are inspected, and the case may be cleaned or polished. Some quartz calibers, particularly high-end ones like Grand Seiko’s 9F, benefit from periodic movement servicing similar to a mechanical watch, though less frequently.
How Often
The traditional recommendation has been every three to five years for a mechanical watch. In recent years, as lubricants have improved and movements have become more robust, many brands have extended their guidance. Rolex now recommends servicing every ten years. Omega suggests eight to ten years for its co-axial movements. Patek Philippe maintains a five- to eight-year interval. Tudor suggests a service interval tied to observed performance rather than a fixed schedule.
In practice, the right interval depends on how the watch is used. A daily-wear sport watch exposed to water, sweat, and physical activity will need service sooner than a dress watch worn occasionally. A watch stored unworn for years may still need service, because lubricants degrade whether or not the movement is running.
The clearest sign that a watch needs service is a change in timekeeping. If a watch that previously gained two seconds per day starts gaining ten, the oils are likely degrading and the movement is running outside its intended parameters. Other signs include a shorter power reserve than expected, a rough feel when winding the crown, or the seconds hand stuttering rather than sweeping smoothly in a mechanical watch.
What It Costs
Service costs vary widely by brand, movement complexity, and who performs the work. Manufacturer service through the brand’s own service center is the most expensive option but provides the most comprehensive warranty on the work performed.
For a straightforward three-hand automatic, manufacturer service typically runs $400 to $800. Rolex charges approximately $600 to $800 for a time-only service on a modern Oyster Perpetual or Submariner, depending on what replacement parts are needed. Omega’s pricing is similar for standard calibers. Chronographs are more expensive because they have more components: expect $800 to $1,200 from the manufacturer. Complicated watches from Patek Philippe or A. Lange & Söhne can run $1,500 to $3,000 or more, reflecting the specialized expertise and time required.
Independent watchmakers typically charge 20 to 40% less than the manufacturer for comparable work. A Rolex service that costs $700 from Rolex might cost $400 to $500 from a qualified independent. The savings are real, but the tradeoffs are worth understanding, which brings us to the next question.
Manufacturer Versus Independent
Sending your watch to the manufacturer’s service center guarantees that it will be worked on by brand-trained technicians using genuine parts. The service comes with a warranty, typically two years, covering the work performed. For watches still under the original manufacturer’s warranty, using the brand’s service center preserves that warranty. And for resale purposes, a documented manufacturer service carries more weight with buyers than an undocumented independent service.
The downsides are cost, turnaround time, and control. Manufacturer service centers can take four to twelve weeks to return a watch, sometimes longer for complicated pieces or during busy periods. They may also perform work you did not request. Rolex, for example, has historically replaced dials and hands during service if they show signs of aging, which can diminish the value of a vintage watch whose original patina is part of its appeal. Rolex has become more accommodating of collector preferences in recent years, but it is worth communicating explicitly that original parts should be preserved.
Independent watchmakers offer faster turnaround, lower cost, and more direct communication. A good independent will discuss every aspect of the service with you before proceeding, and they will not replace parts without your approval. The best independents are certified by the brands they work on (Rolex has a network of certified independent service centers, for example) or have extensive training from watchmaking schools like WOSTEP or the Lititz Watch Technicum.
The limitation of independents is access to parts. Some brands restrict the sale of genuine parts to their own service centers, which means an independent watchmaker may need to source components through secondary channels or use compatible aftermarket parts. For most routine service items like gaskets, springs, and lubricants, this is not an issue. For proprietary components like a Rolex Parachrom hairspring or an Omega co-axial escapement, the manufacturer may be the only option.
Keeping Records
Service documentation adds value. A watch with a documented service history is easier to sell, easier to insure, and easier to evaluate for future buyers. After any service, request a detailed invoice listing the work performed, the parts replaced, and the timing results. Keep these records with the watch’s box and papers.
Over the life of a watch, a complete service history tells a compelling story. It shows that the watch was maintained by competent hands at appropriate intervals, and it gives any future owner confidence in the mechanical health of the movement. For high-value watches, this documentation can meaningfully affect the resale price.
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This article is for informational purposes only. Service costs and intervals cited are approximate and may vary by brand, caliber, and service provider. Always consult a qualified watchmaker or the manufacturer for specific guidance on your watch.