HIGHT QUALITY SOUND: High quality components 12mm diaphragm and speaker allows you enjoy the stereo bass dynamic crystal clear sound</br>ERGONOMIC DESIGN: Ergonomic ear clips keep the earphones stay comfortably and securely in your ear</br>HANDS FREE: Built in mic and volume control allows you answer and end calls?? control music and video playback easily</br>ENVIRONMENTALLY FRIENDLY: Made of TPE?? PC ??ABS composite materials?? sweat proof ??anti-winding ?? portable and