Symptoms
- Visible condensation or fog under the glass
- Watch feels or sounds different after swimming or a shower
- Hands or date wheel show water droplets
- Watch stopped shortly after getting wet
Likely causes
- CommonWater resistance rating exceeded (e.g., splash-rated watch worn swimming)Many watches are rated for splashes only, not submersion.
- CommonWorn or aged gasket/seal around the case back or crownRubber seals degrade over years and no longer seal properly.
- PossibleCrown left partly out or unscrewed while in waterAn open crown removes the water seal entirely.
- Less commonCase back not properly seated after a prior battery changeAn improperly closed case back won't seal correctly.
What to do
- Remove the watch from your wrist and stop wearing it as soon as you notice fogging.
- Do not open the case yourself if you want to preserve any warranty or professional repair options.
- If you must act immediately and have no access to a repair shop, placing the watch in a warm, dry spot (not direct heat) can sometimes evaporate light condensation over a day or two.
- Avoid pressing buttons or pulling the crown while moisture is present, since this can let more water in or short an electronic movement.
- Take the watch to a watchmaker or jeweler promptly; the longer moisture sits inside, the more likely it corrodes the movement.
- Going forward, check your watch's actual water resistance rating (in meters/ATM) before swimming or showering with it.
When to call a pro
See a watchmaker as soon as possible after noticing moisture; prompt professional drying and reseating of seals can prevent corrosion damage.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.