In general, a waterproof watch does not mean that water vapor will never enter it. If you take a bath with the watch, the waterproof rubber ring used for the watch will be eroded by detergents and other chemicals to accelerate the aging, and the waterproof function will be invalidated. Such as in the sauna, air-conditioned rooms, etc., if the humidity in the air is relatively high and the temperature difference varies greatly, will cause water vapor into the watch. Rubber ring with the use of time gradually aging, waterproof performance gradually recede, once found in the watch water vapor should be timely sent to Lucky Harvey authorized repair station to deal with, so as not to cause parts rust, shorten the service life of the watch. Even if the watch has waterproof function, not all water can be prevented. Be careful when wearing a watch and don't let cosmetics containing chemicals, such as seawater, salt water bath, perfume, shampoo, nail polish, nail polish remover, etc., touch the watch. Because they will cause some corrosion to the gold plating and metal surface of the watch, contact should be avoided.

In our daily life, the waterproof standard of 30 meters only for water splash, and you can wash your hands and face while wearing; 50 meters, you can use a small amount of cold water to rinse, can not be immersed; 100 meters, can be used in the swimming pool or the surface of the sea water; any waterproof watch should not be worn in a hot bath, sauna, or in an environment with great temperature changes.

The waterproofness of a watch relies on the waterproof rubber ring on the crystal, back cover, handle, etc. The waterproof watch of 30 meters (3 ATM, i.e., 3 atmospheres) can be used for daily grooming or use in the rain, i.e., water droplets are only splashed on the surface without any water pressure being added to the watch; the waterproof watch of 50 meters can be applied to swimming and general household chores; the waterproof watch of more than 100 meters can be used for underwater work, such as swimming and snorkeling.