•7' 800 x 480 capacitive adjustable touch screen •Adjustable LCD screen •Built-in Bluetooth 4.2 •Built-in dual band 2.4G/5G Wi-Fi (802.11a/b/g/n/ac) •USB 2.0 port for USB recording, •wired/wireless USB headsets and EXP50 •Up to 16 VoIP accounts •Dual-port Gigabit Ethernet •PoE support •HAC Handset •Paperless label design •Wall mountable Especially designed for busy executives and professionals, Yealink SIP-T57W is an easy-to-use Prime Business Phone with an adjustable 7-inch multi-point touch screen that you can not only easily and flexibly find the comfortable viewing angle according to the personal and environmental needs, but also get a rich visual presentation and easy navigation with just one-touch. With the built-in Bluetooth 4.2 and the built-in dual band 2.4G/5G Wi-Fi, the SIP-T57W IP Phone ensures you to keep up with the modern wireless technology and take the first chance in the future wireless age. Its built-in USB 2.0 port allows for USB recording or a direct wired/wireless USB headset or up to three Yealink EXP50 expansion modules connection. Benefiting from these features, the Yealink SIP-T57W is a powerful and expandable office phone that delivers optimum desktop efficient and productivity.