No. Just like things in real life, nothing is permanent. Water resistance depends on several factors (as mentioned previously), some of which can be affected by wear or simply by time. Over time, gaskets can become corroded or misshapen, cases dented or crystals loose or broken. That’s why your watch, like your car and your teeth, needs preventive maintenance.

There are misconceptions about water resistance. Lots of people assume the water-resistance level of a watch represents the watch’s true water resistance when in reality it does not. As mentioned in answers to precious questions, this is because its water-resistance level is based on a motionless depth test, not in a turbulent ocean. The depth level indicated on the watch dial or case-back does not contemplate sudden changes in depth, nor does it take into account temperature changes. Water-resistant watches can also experience water damage if the owner descends underwater too quickly, or if the watch is removed from cold water into warmer air. Both consumers and retailers should note that these watches do not remain water-resistant for their entire lifetimes, as their water resistance will naturally decrease with time.