Model: X4U Fanvil X4U Enterprise IP Phone 12 SIP Lines Dual Gigabit Port with PoE Integrated X4U is an enterprise-level two screen IP Phone. With all the necessary VoIP features and other extended features like EHS headset, BT dongle and Wi-Fi dongle, it provides the high-quality and convenient experience for users at an affordable price. Fanvil X4U provides the direct access to instructions with two high-resolution 320×240 color displays, which is an ideal option for enterprises to improve the flexibility and have a greater productivity on daily work. Harman speaker and wideband codec of G.722 and Opus in this device deliver you an immersive HD audio experience in both high band and low band with the network. High-definition Audio High-efficiency Work Given to superb Harman speaker and wideband codec G.722 and Opus, HD audio in Fanvil X4U enables you to enjoy a crystal-clear and high-efficient group communication. Elegant Outlook Easy Operation Adopting a more intuitive design with a 2.8-inch color LCD, a 2.4-inch color side LCD and 3 line keys with LED light, Fanvil X4U allows a more user-friendly feature customization. Greater Interoperability and Collaboration Matched with accessories, like EHS headset via EHS Cable, WiFi via WiFi dongle and Bluetooth via Bluetooth dongle, Fanvil X4U is designed to encourage your flexibility on work.