Core Features: 2.8 320 240-pixel color LCD with backlight, Dual USB ports, Dual firmware images, T4U Auto-P template unified, T4U firmware unified, Up to 12 SIP accounts, PoE support, USB headset and EHS support, Wi-Fi via WF40/WF50, Bluetooth via BT40/BT41/BT51, Supports color-screen expansion modules, Stand with 2 adjustable angles, Wall mountable and Handset with hall switch.