Jewelry Maintenance: 1.Do not contact liquid like water, sweat and cosmetics 2.Do not wearing at showering, washing, swimming, sleeping, sporting; 3.Do not expose in air for long time, when not wear please put into sealed bag or box; 4.Please wear carefully, do not scrub it or make it fall to the ground. About customer service : We always keep good contact with our customers in order to make good customer service after we received the orders, and will produce some new product. If any question, don't hesitate to contact us, we will reply you within 24 hours in our working time. Shopping notes: 1.Besides the products by AMAZON warehouse delivery, other dispatched from China, Usually 7-15 business days for delivery. However, there might be a backlog in China Customs occasionally. For this reason, the transportation time is longer than 15 days sometimes.