CC-15-MD4, Single sided headset. The CC-15-MD4 is a single-sided headset with a "noise-cancelling" microphone. The microphone arm can be rotated so that the microphone can be used on both the right and left side. The CC-15-MD4 is intended to be used together with BP200/BP300/BP210 and has a mini-DIN connector. The CC-15-MD4 is robust and comfortable to carry.