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)