• 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 microphone pickup 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