When Does a Mechanical Watch Need Service?

A mechanical watch contains moving parts, lubricants, seals, and components that wear at different rates. Service preserves performance and can prevent secondary damage, but there is no responsible universal interval for every watch.

Start with the manufacturer’s guidance

Recommendations vary by movement, age, complication, materials, water-use pattern, and brand support. Read the manual or current manufacturer guidance for the exact reference. A vintage watch or a piece with unknown history may require a specialist assessment rather than a calendar-based assumption.

Water-resistance testing can be needed more frequently than a full movement service, especially when the watch is used in water.

Watch for changes

Common reasons to seek assessment include a sudden change in rate, reduced power reserve, inconsistent starting, difficult or gritty winding, a crown that no longer seats correctly, calendar or chronograph malfunction, rotor noise, condensation, impact, or visible damage.

Stop using the watch if moisture appears, the crystal is cracked, the crown is damaged, or winding produces alarming resistance or sound.

Understand what a full service may involve

A proper movement service often includes disassembly, cleaning, inspection, replacement of worn components as approved, correct lubrication, reassembly, regulation, and testing. Case and bracelet work, water-resistance restoration, refinishing, crystal replacement, and dial or hand work may be separate decisions.

Ask for an estimate that distinguishes necessary mechanical work from optional cosmetic work.

Manufacturer or independent watchmaker?

Manufacturer service can provide access to proprietary parts, procedures, and warranty support. It may also favor replacing components to current service standards. A respected independent specialist may offer more direct communication and a conservation-minded approach, particularly for vintage watches.

The right choice depends on the watch, parts access, required equipment, warranty status, and your preferences about originality. Verify qualifications, insurance, security, documentation, and references.

Give clear instructions

State whether polishing is prohibited or must receive separate approval. Ask the service provider to contact you before replacing visible components such as the dial, hands, bezel, crown, or bracelet. Request that replaced parts be returned when policy and law allow.

Photograph the watch from all sides before handing it over and make sure the intake document records existing condition and included items.

Keep the service record

Retain invoices, test results, parts lists, warranty documents, and correspondence. Good records help future watchmakers, support provenance, and make an eventual sale easier.

The best time to service is based on informed guidance and evidence—not panic, neglect, or a universal slogan.

Further reading: the Vookum warranty · contact support