The Fanvil X4U is an enterprise-level IP Phone with two screens. The X4U has all the necessary VoIP features plus extended features like an EHS headset, BT dongle and Wi-Fi dongle, providing the highest-quality and convenience at an affordable price. Fanvil X4U IP Phone Key Features 12 SIP lines, 3-way conference, SIP hotspot 1×2.8” main colour display, 1×2.4” side color displays for DSS keys 3 Line keys on the main display HD audio on speakerphone and handset Supports Bluetooth headset (Via BT dongle BT20) Supports Wi-Fi connectivity (Via Wi-Fi dongle) Supports EHS wireless headset Up to 30 DSS keys(6 two-colored physical keys) Dual Gigabit ports, integrated PoE Stand with 2 adjustable angles of 45 and 50 degrees Compatible with major platforms such as: Asterisk, Broadsoft, 3CX, Metaswitch, Elastix, Avaya Supports EHS Wireless Headsets The Fanvil X4U supports EHS wireless headsets, for a professional VoIP phone experience