2.8-inch color screen Support 6-way Audio conference Dual Gigabit ports, integrated PoE Support audio codec G.722 and Opus, HD audio on speakerphone and handset Available to link with security products, can be easily customized into various security solutions for reducing investment Built-in 2.4GHz/5GHz Wi-Fi supporting Wi-Fi 6 Built-in Bluetooth 5.4, supporting Bluetooth wireless headset Up to 21 DSS keys, every DSS key can be set as Line/BLF/ Speed Dial Key