Yealink VCM36-W With its built-in 3-microphone array and Yealink self-developed algorithm, VCM36-W features a 20ft (6m) and 360 voice pickup range, perfectly capturing every voice in medium and large meeting spaces. Moreover, with the Yealink Noise Proof Technology, VCM36-W filters out environmental noise within 90 decibels, delivering crystal-clear audio performance. Features Optimal HD Voice Full-Duplex technology 20-feet (6-meter) 360 voice pickup Capacitive mute touchpad WiFi Technology (WPA2/AES128 Encryption) Expansion Mic (Works with built-in mic)