Daily habits make the biggest difference
Wipe the case and crystal with a clean, soft cloth after wear, especially after sweat. Keep the crown closed, avoid hard impacts, and store the watch in a dry place away from objects that can scratch it.
Cleaning safely
Follow the brand’s instructions. If the watch is approved for water exposure and its seals are in good condition, a soft damp cloth may be appropriate; a soft brush can help on a metal bracelet after it is removed or when the manufacturer permits. Do not immerse a watch simply because it once passed a water test. Avoid household cleaners, solvents, and abrasive compounds.
Magnetism
Speakers, magnetic clasps, phone accessories, tablets, and some electronics can affect a mechanical watch when exposure is strong or close. A suddenly fast or erratic rate can be a clue. A watchmaker can test and demagnetize the movement; do not experiment with unverified home methods.
Impacts and activity
Shock protection helps with normal life, not every sport. Golf swings, power tools, contact sports, and repeated vibration can stress a mechanical movement. Match the watch to the activity and remove it when the manufacturer’s guidance is unclear.
Quartz watch care
Replace a depleted battery promptly through a qualified technician; a leaking cell can damage a movement. A battery change is also a good time to inspect seals and pressure-test a water-resistant watch. Solar quartz watches need appropriate light exposure and should not be stored indefinitely in darkness.
Mechanical watch care
Do not force the crown. If an automatic watch has stopped, set and wind it according to its manual. Seek service for abnormal noise, rough winding, moisture, a major accuracy change, or a damaged crown or crystal. Follow the maker’s service guidance rather than assuming every watch needs the same fixed interval.
Storage
Use a lined box or pouch, keep watches separated, and avoid extreme heat, humidity, and direct sunlight. A watch winder is a convenience, not a requirement for most automatic watches; correct settings matter if you use one.