Compatible Dual Cable and Headphone Audio , Port Adapter and Splitter for Phone X Phone 8 Phone 7 / 7 Plus Dual Adapter: This adapter support charger and connecting the iPhone earphone for listening to music or calling at the same time. The volume is adjustable by the connected earphonejust enjoy fun and conveience from this adapter Excellent sound quality: This compatible for iPhone audio adapter supports up to 24bit 48kHz lossless output, 100% copper core provides high-speed and stable signal transmission for a more comfortable experience. Universal Compatibility:Compatible with device that with interface such for iphone X / 8/ 8 plus/ 7 / 7 plus/ Support IOS10.3,11.4 and later system Plug and Play: Just connect the iPhone, adapter and lightning headset and use it directly. Reduce the burden for your trip Lifetime guarantee: We only sell high quality products. If for any reason this product does not meet your requirements, we will always provide you with a full refund. Please feel free to contact us if you have any questions.