For riders who simply want premium sounding music through a wired helmet speaker. The Pulse Plus wired drop-in speakers plug into most helmet communication systems, audio devices, and smartphones with a gold-plated 3.5mm standard audio jack. The in-line volume control puts operation of your Android device at your fingertips: change tracks, adjust volume, mute, and even answer *phone calls. *In-line mic does not have noise cancellation for phone calls- recommended at low speed or while stationary.