When wearing a watch, sweat in the hand will etch the watch case watchband. Steel case is nichchromium, corrosion resistance is good, half steel case is copper, long-term contact sweat, easy erosion, should often use thin cloth or plastic cabinet table support frame cushion wipe sweat, prevent sweat corrosion. In addition to the sea, salt bath, eau de toilette, shampoo, nail polish, nail polish remover and some skin care products containing compounds on the watch's electric gold plating and metal surface has a certain corrosion, should prevent contact.