• 3.7" screen with backlight
Audio Features
• Optima HD voice with Acoustic Shield and Smart Noise Filtering
• Up to 12 SIP accounts
• PoE support 
• Stand with two adjustable angles, wall mountable
• Wi-Fi via WF40/WF50, Bluetooth via BT41
• Support expansion modules
• Support USB recording
• Dual USB ports, dual-port Gigabit Ethernet
• Headset, EHS support