ULTRALINK ULM300MIC Wireless microphone system, which includes 1 of our high quality ULM300M handheld mics and the equally-impressive ULM300RS single-channel receiver. Highest-quality sound is provided by the custom-designed microphone capsule that is optimized for vocal performance and the built-in transmitter that operates in the license-free 2.4GHz range. Our state-of-the-art transmitter operates in the 2.4GHz frequency band, which is well out of the way of TV stations and cell phone towers. And since it is digitally encrypted, your signal gets through in all its pristine, high-definition quality, without the random artifacts that often plague other wireless systems. The ULM300RS single-channel receiver tracks your every move, with a range of up to 200ft (60m).