The Yealink SIP-T53W is designed as an easy-to-use, high-quality business phone for executives and business professionals. The adjustable 3.7-inch graphic LCD display allows you to easily and flexibly find a comfortable viewing angle to suit your personal and environmental needs. With built-in Bluetooth 4.2 and dual-band Wi-Fi 2.4G/5G, the SIP-T53W IP phone ensures that you keep up with modern wireless technology and are at the forefront of the future wireless era. The integrated USB 2.0 port enables USB recording or connection to a direct wired/wireless USB headset or up to three Yealink EXP50 expansion modules. This makes the Yealink SIP-T53W a powerful and expandable office phone that offers optimal desktop efficiency and productivity.