RTS HRF-2-A4F Headset With Dynamic Boom Microphone (XLR 4-Pin Female)The HRF 1 and HRF 2 are medium weight, noise reduction headsets with dynamic flip up to mute microphones. These headsets have a noise reduction rating of 21dB, and are suitable for use in moderately noisy environments. The unique design of the boom microphone allows it to be utilized on either side of the head, based on user preference, while also offering the convenience of flip up to mute technology. All models feature a unique, soft covered