Wired table mic is designed for use with the Yealink video conferencing system (3rd gen) Ideal for small or mid-size conference rooms Omnidirectional three-microphone array captures sound equally from all directions 20ft. radius voice pickup range captures your voice clearly even from a distance Optima HD audio delivers clear voice, natural sound Full-duplex technology enables smooth, uninterrupted conversations Acoustic echo cancelling removes echoes from the audio, so your voice sounds clear and natural during conferences Noise-proof technology reduces background sound, ensuring your voice comes through clearly Quickly silence the mic for privacy or to prevent background noise by muting the touchpad Wired design connects using the built-in network cable