Ultrabass Earphones comes with Hi-Fi Stereo Sound, which gives you a mesmerizing music experience. The deep bass feature post processes the output of the music you hear and gives you a much-refined version of it. The earphone also comes with a high definition built-in microphone, which can pass your voice to the listener in a much clearer way. The earphone has a multi-function button, which can play/pause/volume control/track speed/answer calls. All functions in one button.