DECT Conference Phone, Built-in Battery, Built-in Bluetooth 4.0, Built-in 3-Microphone Array, Optima HD Voice, Full Duplex Technology, 20-Foot (6-Meter) and 360-Degree Microphone Pickup Range, Yealink Noise Proof Technology, 5-Way Conference Call, Connect to PC via Micro USB Port, Hybrid UC Meeting, 3.1° 248x120-Pixel Graphical LCD with Backlight, Support Call Recording via Micro SD Card, Sensitive Touch Keypad, Upgrade Over the Air, Charging Cradle with PSU
