Watch care and maintenance

A mechanical watch is a precision instrument. It does not require daily rituals or special products. What it requires is basic awareness, a service on the right schedule, and a competent watchmaker when the time comes.

What a mechanical watch actually needs

Three things: occasional winding if the movement is manual-wind, regular wearing if the movement is automatic (the rotor charges the mainspring as the wrist moves), and a service every 5 to 10 years depending on the caliber and how it has been worn.

That is the full list. A watch does not need ultrasonic cleaning every month, special watch oil on the crystal, or a winder running 24 hours a day. Overcare is a real thing and it wastes money.

Daily handling

Winding. Wind slowly and deliberately. Most modern watches have a slip clutch that prevents over-winding, but steady pressure is better than aggressive turns. Stop when you feel resistance increase. For automatic watches, about 20 to 30 turns of the crown when starting from fully unwound will get the watch running; the rotor takes over from there.

Setting the time. Pull the crown to the time-setting position and advance the hands clockwise. On a watch with a date complication, do not set the date between approximately 10 PM and 2 AM. The calendar mechanism is mid-change during that window and forcing it can strip teeth off the date wheel. Set the date first while the watch is clear of that window, then set the time.

Pulling the crown. Pull straight out with a smooth, even motion. Do not yank or twist at an angle. The crown stem is a small component and side-loading it is one of the more common causes of crown-tube damage, especially on dress watches with finer stems.

Storage

Magnetism. Magnetism is the hidden enemy of a mechanical watch. Modern life concentrates magnets in places that are easy to overlook: phone speakers, bag closures (especially leather handbag clasps), laptop hinges, refrigerator seals, and desktop speaker cabinets. A magnetized watch will run fast or erratically. A watchmaker can demagnetize a watch in about 30 seconds with a demagnetizer. The fix is easy; the damage to a service interval is not.

Temperature. Lubricants inside the movement were chosen for normal ambient temperatures. Sustained heat (a car dashboard in summer, a sauna) or sustained cold (a ski locker, a deep freezer) can cause lubricants to thin, thicken, or migrate. Occasional exposure is fine. Long-term storage at temperature extremes is not.

Long-term storage. If you are storing an automatic watch for months, wind it occasionally and give it a light rotation. This is not about the mainspring; it is about keeping the oil on the crown tube and stem seals from drying out and losing their compression. Manual-wind watches can sit fully wound or fully unwound without harm. Leaving them mid-wound is the only state to avoid, though the consequences are minor.

Water resistance in practice

The water resistance guide covers this in depth. Read it before getting any watch wet. The short version: ratings degrade over time, gaskets dry out, and a watch that was WR to 100 meters when new may not be WR to 30 meters now if it has never been pressure-tested.

When to service

Service intervals are typically every 5 to 7 years for a modern caliber with current lubricants. Vintage movements and high-complication pieces warrant shorter intervals. The right answer varies by caliber; check the manufacturer recommendation.

Watch for these signs that a service is needed before the scheduled interval:

• Erratic timekeeping, specifically more than about 30 seconds per day off in either direction from the rated accuracy.
• A crown that feels gritty when winding, or stiff to pull out and push in.
• Any visible moisture under the crystal. This is urgent. Moisture causes rust on steel components and fast corrosion of brass parts inside the movement.
• A caseback that was opened and resealed improperly. If you bought a pre-owned watch and the caseback does not sit flush, or shows tool marks, assume the water resistance is compromised.

On the run-until-it-stops approach: some experienced collectors run watches without proactive service and let them tell them when service is due. This is honest practice and it is not obviously wrong for a watch you wear daily and monitor for symptoms. The risk is that a movement that seizes or runs dry causes component damage that turns a routine service into a parts sourcing project. Proactive service is the lower-risk choice, especially for watches where replacement parts are scarce or expensive.

Finding a watchmaker

The choice between a manufacturer service center and an independent watchmaker depends on the watch.

Manufacturer service centers are the right choice for modern watches under warranty, for cases where you want original parts sourced from the brand, and for complications where brand-specific tooling matters (Patek perpetual calendars, for example). The downside is cost. Manufacturer service rates are high and their work is standardized, which can mean case polishing you did not want and other normalizations that affect collector value.

Independent watchmakers are often the better choice for vintage watches, where preserving original surface finish matters and sourcing non-original parts is sometimes unavoidable anyway. A good independent will work with you on what the service includes and will not default to polishing. They are also typically less expensive. The risk is variance in quality; there are excellent independents and there are careless ones.

Two questions worth asking any watchmaker before committing a watch to service:

• Do you have experience servicing this specific caliber?
• What does a full service include, and will you confirm with me before any cosmetic work on the case or bracelet?

A watchmaker who answers both questions clearly and without hesitation is a good sign. One who cannot name the caliber after you hand them the watch is not.

For a deeper treatment of finding and vetting watchmakers, see the dedicated watchmaker guide, which covers the full list of questions to ask, red flags, and how to find community-vetted candidates by region.

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