Support for up to 16 SIP accounts & SIP hotspot 4 line keys 3.5" colour display 2.4" side colour display for digital label keys Built-in Bluetooth for easy connection of Bluetooth headsets Supports WiFi connectivity via WiFi dongle Support EHS wireless headsets Up to 30 programmable memory keys (accessible through 6 dual-coloured physical keys) Dual Gigabit ports PoE support (optional power supply available to purchase separately) Fanvil's X5U enterprise-level IP phone offers users an affordable device with a 3.5" colour display, built-in Bluetooth and support for up to 16 SIP accounts. For ease of use, the X5U also features a 2.4" side display for up to 34 digital label keys which can be accessed through 6 dual-coloured physical keys. With support for the connection of WiFi dongles and an EHS wireless headset, the X5U provides an enriched user experience. Specifications