You should never wear your watch in the shower. The official authentic watches website states that it’s safe to wear a 200-meter water resistant watch in the shower. However, you’ll find many warnings from watch sellers and watch enthusiasts in regard to the negative effects that hot water and soapy water has on a watches water resistance.The combination of hot water and soap or shampoo can over time degrade the rubber gaskets that keep your watch’s water resistance. … Even a watch that’s completely waterproof, like a dive watch, can be damaged by wearing it in the shower. When it comes to mechanical watches, the hot temperature can degrade the rubber gaskets, a ring inside the watch that keeps water from getting inside. Over time, this can cause water to get inside your watch and damage it completely. Soap and shampoo can not only degrade the gaskets in the same way but can also leave a soapy, gunky residue that builds up over time. 

With most decent watches, you won’t notice the effects of showering with your watch on until you’ve been doing it for months, or possibly years.This is why some people think showering with a watch on is no problem. They do it once or twice and see nothing is noticeably wrong with their watch right away, without thinking of the long term effects.

I Accidentally Wore My Watch in the Shower, What Should I Do?

1. If it’s water resistant, like a dive watch, fill a cup or bowl with a mixture of lukewarm (not hot) water and a few drops of dish soap. 
2. Let the watch sit in the water for about 10 minutes. 
3. Take it out, scrub it off with a clean toothbrush, making sure to get all over the watch, including between bracelet links.
4. Rinse thoroughly with clean tap water. Make sure to run the water between
5. Dry it thoroughly.