Classic but upgraded. The KDM earphone collection is the perfect combination of convenience and efficiency that settles easily in your ears and takes your senses to another level with the fathomless bass and all-round frequency. So, ready, set, ROCK! Sound : Hi fi sound effect Voice : Clear human voice Noise isolation : Yes Bass : Precise Extra Bass, high resolution sound Mic : Hands free in- line microphone Design : Ergonomic design Application : Compatible with all mobile devices ,music players , portable gaming devices and computers Phone Support : Build in mic for hands free calling Working power : 100mw Frequency response : 20 – 20000 Hz Wire length : 120 cm Jack : 3.5 mm jack Speaker : 10mm unit size moving coil speaker