Optimal HD audio, full duplex technology
Yealink Noise Proof Technology
20-foot (6-meter) and 360-degree voice pickup
Built-in 3-microphone array
Sensitive touch keypad
3.1” 248×120-pixel graphical LCD with backlight
Power over Ethernet
Includes Power Supply
5-way conference call
Hybrid UC meeting
Built-in Wi-Fi (2.4GHz, 802.11.b/g/n)
Built-in Bluetooth 4.0
Local USB call recording
 California Prop 65 Warning