▶K gold material is made of silicone back button. If you need K gold back button, please contact the designer. ▶Maintenance instructions It is the best way to maintain any jewelry, because the natural secretion of oil can form a thin protective layer, so that the jewelry has a warm luster, so it is okay to wear a bath and rain. However, if you have a lot of exercise, you can also rinse the jewelry with water, then blow dry with a hair dryer to avoid moisture oxidation. Jewelry avoids touching hot springs and sea water. In addition to the hot springs, the sulphur will cause the silver to turn black. Both of them may cause irreversible corrosion to the jewelry. Therefore, you should take the hot springs and go to the beach to play, remember to take the jewelry off early! If you don't wear the jewelry, you can put the jewelry into the jewelry box after you wipe it completely. You can isolate the air to avoid oxidation. If you take it out next time, it will not be dark and dirty!