Enthusiast shows, I have this camera for years, and use it regularly without problems. Only precaution I put a protective cloth or plastic sheet between the case of the watch and the 2 amounts, to avoid scratching the glass or the case. Rustic material for amateur use. As for the sealing of 30 m I am surprised, unless the original want to use it underwater. Be careful not to lose more diving courses in positioning studs opening of a watch under water is not recommended. Humor! Amazon should review the description more accurately.