1, press the watch with dry cotton, and then blow dry it with a light bulb, so that all the water vapor in the watch can evaporate.

2. Take a small piece of calcium chloride, wrap it in gauze, then open the watch cover, put the wrapped calcium chloride and the watch together in an airtight plastic bag or glass bottle, seal it to remove water vapor, and the watch can return to normal.

3. Be sure to wipe the sweat with a soft cloth or wear a plastic watch holder to prevent it from being eroded by water vapor.

You can expose the watch to the sun and evaporate the water vapor.