["Prime Business Phone for Optimum Desktop Productivity Designed specifically for busy executives and professionals, the Yealink SIP-T54W is an easy-to-use Prime Business Phone with an adjustable 4.3-inch color LCD screen. With built-in Bluetooth 4.2 and built-in dual-band 2.4G/5G Wi-Fi, the SIP-T54W IP Phone ensures you keep up with modern wireless technology and have the first chance in the future in the wireless era. The built-in USB 2.0 port allows for USB recording or direct connection of a wired/wireless USB headset or up to three Yealink EXP50 expansion modules. With these features, the Yealink SIP-T54W is a powerful and expandable office phone that offers optimal efficiency and productivity in the workplace. This device has been equipped with a new chipset. Please check compatibility with your PBX provider. Compatibility of the previous version does not automatically mean compatibility of the V2 version", "3.7\" 360 x 160 pixel color display with backlight", "Adjustable LCD screen", "Integrated 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 connection", "PoE support", "HAC handset", "Paper sign-free design", "Wall mounting possible"]