Water is the greatest enemy of any watch – and water resistance is not a permanent condition. External influences can have a negative impact on the water resistance of your watch, such as seals that have become porous due to age, extreme temperature fluctuations, or frequent contact with everyday chemicals. We recommend checking the water resistance of a mechanical watch on a regular basis. The respective water resistance of your watch is engraved on the back of its case. 3 bar: Your watch is splash-proof, but otherwise prefers to remain dry.  5 bar: Your watch can be worn in the shower. >20 bar: You can wear your watch when diving. Important: Never pull out the crown when under water. If your watch is fitted with a screw-down crown, make sure to screw it back tightly after each use.