The 5.8GHz provides high quality audio Record audio up to 30 meters away with no obstacle Automatic channel switch programmer to avoid interference from multiple systems in the same environment With three discrete channel groups One receiver can work with up to three transmitters simultaneously Line & Mic inputs provide wide range of input option Real-time headphone monitor jack Detachable and flexible antenna can be rotated 360 deg. accordingly for best sound Rechargeable li-ion battery (included)