The wireless headset combines a dynamic microphone with switch and a dual antenna receiver. The wireless signal is transmitted via a unique 24-bit UHF digital system. A practical carrying case, microphone cover and audio cable are included. The Numark WS-100 is available in four frequency variants (black - 863.9 MHz/blue - 864.2 MHz/red - 864.5 MHz/yellow - 864.7 MHz).