The CM-i5 Audio Headset is designed to work with wireless packs that provide bias power. Its patented design utilizes in-earphones for lightweight comfort and provides excellent noise isolation in moderate to high noise environments. This slim-line design allows for incredible ease in switching between three listening modes: left, right, or left and right to create the desired audio mix. The in-earphones are detachable and replaceable making it even easier for service replacement or to personalize with your own earphones. At a weight of only 1 ounce, it is a mere fraction of other binaural headsets. Equipped with 4-Pin Male XLR.