Easy KZ ZS1 In-ear Earphone Dual Dynamic Driver Subwoofer Doble Unit Hifi Monitor Headphones (Black without mic) Independent sound channel for each driver, the sound will not be distorted, Bring you a new kind of auditory sense, dental, and sound like feeling extremely rich Excellent sound quality with vast sound field, for magnificent spatial aspects of the sound The midbass and treble driver unit have a rich, vigorous performance at bass, midrange and treble; bass, mids and treble is rich and energetic Durable, Designed with a memory wire technology, the in-ear headphones make it easier to keep moving, providing a locked-in fit With the stylish design and high-end sound quality,this earphones are designed for the latest generations of iPod, iPhone, and iPad. They work with all Androids, tablets, mp3 players, and related devices.