Mechanical watch care starts with gentle exterior cleaning, secure crown handling, and knowing when a professional should inspect the watch instead.
The safest answer to how to care for a mechanical watch is to wipe it after wear with a clean, soft, dry microfiber cloth. A three-hand watch with a steel case and sapphire crystal—such as the Shanghai Watch 7120—can be wiped daily with this method. This mechanical watch daily care habit removes perspiration, skin oil, dust, and light residue from the crystal, case, caseback, clasp, and bracelet without introducing unnecessary moisture.

Use a dry, very soft brush only for loose dust in bracelet links or around the lugs. Do not push bristles into the crown, case seams, or crystal edges. A clean cloth matters because trapped grit can mark polished surfaces.
This watch care guide separates routine exterior cleaning from mechanical watch maintenance. Cleaning improves the outside of the watch. It does not renew lubricants, regulate the movement, replace seals, or confirm water resistance. For broader ownership habits, see Shanghai Watch's care article for mechanical timepieces.
Water resistance watch care is always model-specific. Before using even a damp cloth, confirm the watch's water-resistance rating, inspect the crystal and crown, and make sure the crown is fully pushed in. If the watch has a screw-down crown, secure it gently without forcing it.
Choose dry cleaning only when any of these conditions apply:
| Situation | Safe home-cleaning choice |
|---|---|
| Water resistance is unknown | Dry cloth and soft dry brush |
| Crown is loose, damaged, or difficult to operate | Dry cloth only, then seek inspection |
| Crystal is cracked or condensation is visible | Do not use water |
| Vintage watch or uncertain service history | Dry cleaning only |
| Leather strap is attached | Keep the strap away from water |
Do not clean an assembled watch under a running faucet. Pressure can increase the risk of moisture entering through compromised seals. Avoid operating the crown or pushers while the watch is wet.
Check your model's instruction manual before using water, removing a strap, or deciding how to wind a mechanical watch or how to wind an automatic watch.
For a verified water-resistant watch with a metal bracelet, a cautious deeper clean is appropriate when visible residue builds up. A sports watch like the 114 Military with 300-meter water resistance can handle more thorough bracelet cleaning, but always confirm the crown is fully secured before any contact with water. Lightly dampen a soft cloth with clean water and wipe the case and bracelet. If the model documentation permits it, use a small amount of mild soap with a soft brush on bracelet links and clasp recesses. Remove any residue with a separate lightly damp cloth, then dry every accessible gap.
Never use abrasive pads, household sprays, solvents, disinfectants, steam, hair dryers, or ultrasonic cleaners on an assembled watch. These methods can harm finishes, seals, adhesives, and strap materials.

Leather strap care requires a different approach. Dress watches with leather straps—such as the A623 Revival (36mm) or 7120 leather strap variants—require this cautious approach, especially after summer commutes or warm-weather wear. Wipe the strap with a dry soft cloth after wear, especially after warm-weather use. For minor surface marks, use a minimally damp cloth only, then allow the leather to air-dry in a shaded, ventilated place. Do not soak leather, saturate it with soap, or expose it to direct heat. Replace a strap when it becomes cracked, stiff, weak around the holes, or unreliable at the buckle.
After ordinary daily wear, a dry wipe is usually enough. More frequent watch cleaning is useful after heavy perspiration, sunscreen contact, dusty conditions, or approved water exposure.
| Exposure | Immediate action |
|---|---|
| Sweat or sunscreen | Wipe promptly with a soft dry cloth |
| Light rain | Dry the case without touching the crown or pushers |
| Saltwater or pool water | Rinse with fresh water only when the model is specifically approved for that exposure, then dry thoroughly |
| Dust in bracelet links | Use a soft dry brush, then wipe with microfiber |
| Leather strap perspiration | Air-dry in shade and avoid wearing it again until fully dry |
Automatic watch daily wear can maintain power through wrist motion, but it does not eliminate cleaning or inspection needs. Should you wind an automatic watch every day? Usually not when regular wear keeps it running, but the correct procedure depends on the movement. If the watch has stopped, confirm whether hand-winding is supported before turning the crown.
Professional care is the right next step when exterior cleaning cannot address an operational or water-resistance concern. Watches with intricate finishing, exhibition casebacks, or complex complications should be serviced by authorized professionals rather than cleaned aggressively at home. Seek assistance promptly for condensation under the crystal, a damaged or loose crown, a cracked crystal, unusual rotor noise, resistance while winding, or a sudden major timing change.
Mechanical watch accuracy naturally varies somewhat with power level, position, temperature, and daily use. However, a mechanical watch running fast or slow over several days may indicate watch magnetism, shock exposure, low power, moisture, or a need for service. Watch shock protection reduces risk but does not make a mechanical movement impact-proof. Keep the watch away from strong magnets and avoid repeated hard impacts to help keep a watch accurate.
How often to service a mechanical watch depends on the model, condition, water exposure, and manufacturer guidance. Do not treat a cosmetic clean as a substitute for automatic watch maintenance. Shanghai Watch discusses timing changes, power reserve concerns, water ingress, and crown problems in its service guidance.
For storage, clean and dry the watch before placing it in a padded box or pouch. How to store a mechanical watch properly is simple: keep it separated from other watches, away from humidity, direct sunlight, heat, and magnetic accessories. This conservative routine supports long-term Shanghai Watch care and helps an automatic watch remain serviceable for many years. For model-specific support, consult the Shanghai Watch FAQ and warranty information.