Android 9.0 operating system. 5-inch multi-touch screen with 720x1280 resolution. Optima HD audio, full duplex technology. Yealink Noise Proof Technology. 20-foot (6-metre) and 360-degree voice pickup. Built-in 12-microphone array for voice pickup. Built-in 1-microphone array for noise cancellation. 10-way conference call. Hybrid UC meeting. Built-in WiFi (2.4GHz/5GHz, 802.11a/b/g/n). Built-in Bluetooth 4.2.
