General Features Android 9.0 Os 5'' Capacitive Touch Screen Black Acoustics Fabric, Resistant To Water/Oil/Stain Audio Features Optimal Hd Audio Yealink Noise Proof Technology, Smart Noise Filtering 20-Foot (6-Meter) Microphone Pickup Range Built-In 12-Microphone Array For 360-Degree Voice Pickup Built-In Microphone For Noise Cancellation Full-Duplex Speakerphone With Aec Phone Features 10-Way Conference Call Analog Pstn Calls Via Yealink Cpn10(Optional) Connectivity Built-In Bluetooth/Wi-Fi Power Over Ethernet (Ieee 802.3At), Class 4 1 Usb 2.0 Type A Port, 1 X Usb 2.0 Type-C Port Advanced Features Supports Dect Wireless Expansion Microphone Cpw65 (*Pending) Supports Yealink Device Management Platform