iSens High Resolution Heavy Bass Wired In-ear Metal Headphone Headset Earphone with Microphone for iPhone Android Phone Devices (Gold) Smart single button remote controller for calls answering, music play/pause and pre/next track. Voice and drums sound balance perfectly, especially the powerful bass make the sound stereo and dynamic German monitor-class speakers, high sensitivity of 94dB, ensure high quality music and conversation. The cavity looks like a shiny ring, simple and decent. Ergonomic design enables long hours of comfortable listening Compatible for iPhone, android 4.0 and above operation system.