In life, most friends who wear watches often encounter the problem of water entering the watch. If the watch enters water, it is easy to cause the movement to oxidize and rust, but the watch is written with a waterproof function. Why is it still water?

​There are many people's general awareness that waterproof watches will be waterproof, but in fact many waterproof watches will enter the water after contact with water. The 30-meter water resistance of the watch performance label actually does not mean that the watch can be used underwater to 30 meters, but it means that the watch can withstand three atmospheric pressures to meet daily waterproof needs.
​If the watch is marked as waterproof to 50 meters, it is life waterproof, and when the watch is marked as 50 meters, it is generally waterproof and suitable for people who work in wet places. If the logo on the watch is 100 meters, it means the watch can be immersed or can swim and dive. When the watch is waterproof for more than 200 meters, it indicates that the watch has a high degree of waterproof function and can maintain the waterproof function in a water environment with a certain impact, such as diving activities.