TheCompatibilitywith iPhone 7 / 7 Plus / 8 / 8 plus / X / XS / XS Max / XR headphone is a connectivity versionWhat should you pay attention to when you first use it?1.Open your on your iPhone2.Plug the earphone connector into your iPhone3.Click on your interface manually to establish the connectionWhat should you pay attention to the next time you use it?1.Open your on your iPhone2.Connect your earphone with your iPhone and just wait for a few seconds then it will connect automatically.Compatibility:use with iPhone 7 / 7 Plus / 8 / 8 plus / X. Support all the iOS systems.Contact us at any time If you have any questions.  This headphones combining classic design, noise reduction, give you premium sound quality and maximum comfort.It produce exceptional frequency response for an enhanced listening experience and creates a better sound isolation and minimizes external sound interference.About color    Because of the fast updating speed of the products, the styles or colors of some products have not been updated in time. In this case, we will select the color from the pictures for delivery. About Information and address of order    Please leave the exact receiving address and telephone number in the shipping information, otherwise the platform and your account credit will be damaged. Please cherish it. About Delivery Time    Generally speaking, we will send within 48 hours after your payment. In addition, we will work overtime to process orders for multiple products. You can rest assured. About Out of Stock    Due to the rapid turnover of some single products and the delay in updating the product information, it is inevitable to find out the out-of-stock phenomenon after payment. If you unfortunately encounter this situation, we are very sorry. You can pay close attention to the status of the order in time or ask the specific situation of the customer service order on the platform. About Logistics   The whole logistics process is basically provided by the platform. If you have special requirements for logistics, you can contact the customer service of the platform.