Watch waterproof to rely on the table glass, back cover, the table etc. of the waterproof rubber ring to achieve the appropriate standard. Water tables are notwearing any wash water bath, sauna, or large temperature changes in the environment.Because waterproof apron will be affected by temperature and thermal expansion and contraction gaps appear to cause accelerated aging water and table watercondensation occurs, will make a serious mechanical damage. Waterproof apron andwatch the table (containing water ring) should be changed regularly based on usage.Quartz watch to be in the same time each time you change the battery replacementparts water to ensure good water resistance.