Features •3.7' 360x160-pixel graphical LCD with backlight •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 12 VoIP accounts •Dual-port Gigabit Ethernet •PoE support •HAC Handset •Paperless label design •Wall mountable Especially designed for busy executives and professionals, Yealink SIP-T53W is an easy-to-use Prime Business Phone with an adjustable 3.7-inch graphical LCD that you can easily and flexibly find the comfortable viewing angle according to the personal and environmental needs. With the built-in Bluetooth 4.2 and the built-in dual band 2.4G/5G Wi-Fi, the SIP-T53W 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-T53W is a powerful and expandable office phone that delivers optimum desktop efficient and productivity.