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.