Convenient to carry wherever you go: Wraps around wrist and fastens for earbuds that are ready when you need them. Tangle-free wires: Lanyard-style nylon cord housing keeps wires neat and untangled so they are always ready to use. Easily adjusts to fit: Move the slider up, wrap cords around wrist and Push jack plug into slider for the perfect fit. Crystal clear sound: 10mm dynamic driver gives you exceptional sound quality to listen to your favorite tracks and talk on the phone. One button mic: Comes with a universal one button mic, making it easier to use with the cellphone.