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.This is due to watch protection film Its value attribute is relatively large, and it is easy to become the backbone of the industry. https://finewatchcare.com/
Good waterproof performance can ensure the long-term use of the watch and is not affected by water vapor and corrosion.