Prepare a bag of desiccant, which is the kind of Wangwang ice cream bag, and prepare another bag (preferably a self-sealed bag). Put the desiccant on the glass surface of the watch, put it in a bag and seal the mouth tightly. After a few hours, there was no water in it. Dry the surface first.
Then blow it with a hair dryer. Don't use the most upscale, medium temperature blowing, don't worry. It can be divided into two times, 3 or 5 minutes each time, which can promote the evaporation of water vapor without damaging parts.