Yealink CP930W Wireless Dect Conference Phone, 3.1” 248x120-pixel graphical LCD with backlight, Built-in rechargeable Lithium battery, Built-in BT 4.0, Up to 24-hour talk time, Up to 15-day standby time, 3.75-hour charging time, Built-in 3-microphone array, Optima HD voice, full duplex, 20-foot (6-meter) and 360-degree microphone pickup range, Noise Proof technology, 5-way conference call, Connect to PC via Micro USB port, Connect to mobile phone via BT, Hybrid UC meeting, Call recording via Micro SD card, Sensitive touch keypad, Upgrade Over-the-Air (OTA), Work with Yealink W60B Base Station.