Fanvil X5U Enterprise IP Phone; 3.5-inch main color screen and 2.4-inch extended screen for DSS keys; HD audio on speakerphone and handset; Support 6-way audio conference; 4 Line keys on the main display; 6 DSS keys on the extended screen, up to 30 DSS keys via 5 pages; Built-in Bluetooth 4.2, support bluetooth headset; support Wi-Fi Dongle; Support EHS wireless headset; Dual Gigabit ports, integrated PoE; Stand with 2 adjustable angles of 45 and 50 degrees