As the Gigabit IP phone with a 2.8-inch color display, Fanvil X3SG has better improvement on elegant appearance as well as functional performance than Fanvil X3G. Fanvil X3SG possesses G.722 and Opus to deliver the users a crystal-clear audio enjoyment. Newly added function keys, increased SIP lines and supported EHS headset also make it an efficient business tool in office.