If it is quite dirty, leave it submerged for a few hours. If it is not too dirty, leave it submerged for about 30 minutes. If your watch’s head doesn’t detach from the bracelet, wrap paper towel or plastic wrap around it, and bind it in place with string or a rubber band. Alternately, take your watch to a jeweler for a professional cleaning.
Do not remove the cover over the watch face. The cover exists to prevent dirt and rust from affecting the watch face.
Consult manufacturer directions to learn more about your watch’s water-resistant properties.
Wipe your watch down regularly, especially after you work out or get caught in the rain.
You should also utilize a jeweler’s services when you wish to clean a stainless steel antique watch. [11] X Research source