POE powered, no external power supply 

• Optimal HD audio, full duplex technology 

• Yealink Noise Proof Technology 

• 20-foot (6-meter) and 360-degree microphone pickup range

• Built-in 3-microphone array 

• Based on Android 5.1 operating system 

• 5-inch multi-touch screen with 720x1280 resolution 

• Built-in Wi-Fi (2.4GHz/5GHz, 802.11a/b/g/n/ac) 

• Built-in Bluetooth 4.0 

• Connect to PC via USB Micro-B port