3.1 248x120-pixel graphical LCD with backlight Built-in rechargeable Lithium battery Up to 24-hour talk time Up to 15

3.1” 248x120-pixel graphical LCD with backlight Built-in rechargeable Lithium battery 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 technology 20-foot (6-meter) and 360-degree microphonepickup range Yealink Noise Proof technology 5-way conference call Connect to PC via Micro USB port Connect to mobile phone via Bluetooth Hybrid UC meeting Call recording via Micro SD card Sensitive touch keypad Upgrade Over-the-Air (OTA) Work only with Yealink W60B Base Station