When a watch needs attention
A change in rate can be caused by magnetism, impact, a low power reserve, wear or a developing mechanical issue. Moisture under the crystal, a loose component, a damaged crown or a chronograph that fails to start or reset merits prompt assessment. Do not continue operating a watch that may contain water or broken parts.
Calendar complications and chronographs have specific operating cautions. If the watch is due for attention, consult its manual or a qualified watchmaker rather than trying to diagnose it by repeated winding, timing apps or pressure exposure at home.
What a full mechanical service can involve
Depending on the brand and model, a full service may include disassembly, cleaning, inspection, replacement of worn parts, lubrication, reassembly, regulation and testing. Case and bracelet refinishing may be offered separately. Battery replacement and seal renewal are different work scopes from a complete mechanical overhaul.
Ask what parts will be replaced, whether original components will be used, what polishing is proposed, how water resistance will be tested and what warranty covers the work. Request permission before optional cosmetic work, and retain the estimate and final service record with the watch's ownership documents.
Authorized or independent service
An authorized service center can provide brand-specific processes, parts and warranty coverage subject to its current terms. A specialist independent watchmaker may offer expertise and a different cost or turnaround, but parts access, training and accepted work vary by brand and reference.
Compare credentials, experience with the exact caliber, parts policy, insurance, estimate, turnaround and post-service warranty. For a valuable or rare watch, ask the brand or a trusted specialist how outside service could affect future support. Keep an unbroken record of who handled the watch.
Preventive ownership
Keep the watch away from strong magnets, severe impact, extreme temperature and moisture beyond its intended use. Rinse after salt exposure only if the maker's care instructions support it, and dry the watch with a soft cloth. Store it clean and secure, and do not operate a screw-down crown while it is wet.
Service intervals published years ago may not match current recommendations. Check the latest guidance from the maker or an authorized center for the exact reference rather than following a universal number of years.