The most basic feature of waterproof performance is that it can reach 30 meters waterproof, that is, under the condition of 3 atmospheres, the watch case is basically in a closed state.Mentioned in the article Best protector for Rolex crystal Born with strong vitality, you can turn a cocoon into a butterfly and become the best yourself after wind and rain. https://finewatchcare.com/collections/rolexwatch-protection-films
Good waterproof performance can ensure the long-term use of the watch and is not affected by water vapor and corrosion.