Clock fell into the water
At the moment there is still a bathing season in Switzerland. In the beautiful Weggis in Lido as fast as possible in the cool water and what happened? I have my watch (Rado) - unfortunately not so waterproof - forget to take off! Oh my, all the glass inside was covered with water like a fog.
If you can, cover immediately or as soon as possible in a glass with rice overnight and close lid tightly. So all the water is sucked out of the rice! I was lucky, without repair costs, the clock runs again as before.
It is worth a try, but it is even better if you go into the cool water without a clock.