The FIDUE A31s earphones embody everything a modern earphone should be. Superior sound, smartphone compatibility, external noise isolation and long term comfort are all present here. High fidelity sound is provided with a balance of strong bass, smooth mids and well defined highs. With a small driver enclosure and long sound tube, the A31s differs from conventional earphones in creating big sound in a tiny housing. An 8mm micro-dynamic driver funnels superior sound directly into the earcanal, and double flange eartips provide excellent noise isolation and offer unparalleled comfort for long-term listening. The A31s earphone's integrated call answering button is compatible with most smartphones, including Apple, Android and Windows devices. The inline mic and remote allows the user to pause and resume music playback, as well as answering incoming calls. The A31s offers control over Apple, Android and Windows devices. A single button remote allows the listener to pause and resume music playback and answer incoming calls. With powerful bass and clear highs, the A31s delivers fun and engaging playback suitable for a range of genres. Color: Black.