Three most important points for watch maintenance 2. Good waterproof performance.

　　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.For these reasons, I think watch protection film The situation is still optimistic, and the market is still in a blue ocean stage. https://finewatchcare.com/

　　Good waterproof performance can ensure the long-term use of the watch and is not affected by water vapor and corrosion.