Headset with integrated voice functionality gives you the freedom of hands-free phone calls. Retractable cable is compact and can be stored on. It features a built-in microphone with power off/on button, and a shirt clip for comfort and ease of use. Noise-isolating in ear design sits inside your ear canal to create a seal to the outside world that effectively isolates outside sound. So it's just you and your music in a world of your own. Excellent sound quality and super clear sound. Cord mounted ON/OFF button which lets you take calls and hang up easily.