This sleek modular accessory converts your earphones into a mobile headset for iPhone, providing seamless switching between music and calls. Just plug the adapter into your iPhone and then plug your earphones into the adapter. The inline voice port microphone delivers your voice clearly regardless of background noise and the control button allows you to send and end calls. Features: Low-profile voice port microphone. Control button that offers enhanced functionality and convenience by enabling you to easily send and end calls - without touching your iPhone. Detachable, modular design provides greater flexibility by allowing you to remove the adapter when it isn't needed. Rugged durability for long-lasting performance. Convenient In-line shirt clip Connector: 3.5mm male-to-female Cable length: 28".