The Yealink SIP-T54W is designed as an easy-to-use, high-quality business phone for executives and business professionals. The adjustable 3.7-inch color LCD screen 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-T54W 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-T54W a powerful and expandable office phone that offers optimal desktop efficiency and productivity. 3.7" 360 x 160 pixel color display with backlight Adjustable LCD screen Built-in Bluetooth 4.2 Built-in dual-band Wi-Fi 2.4G/5G (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 port PoE support HAC handset Paper label-free design Wall mountable