The Williams AV MIC100 is a microphone accessory built for use with Williams AV's assistive-listening and Digi-Wave communication systems. It's designed to pair directly with the transmitter or transceiver it's sold alongside, giving presenters, interpreters, or tour guides a dependable, system-matched input. As a purpose-built accessory rather than a general-purpose microphone, it's intended to be ordered alongside the Williams AV system it supports.