1. This iP7/8/11-15 to headphone adapter uses an advanced BST smart chip to provide HD audio, powerful noise cancellation from which you can get higher fidelity sound 2. It allows you to listen to music and answer phone calls using headphones. In addition, it supports wired control functions such as microphone volume control, pause and play function, play games,  very easy to use. 3. made of high quality aluminium alloy shell connector and nylon braided cable makes this adpter more durable.