Especially designed for busy executives and professionals, Yealink SIP-T54W is an easy-to-use Prime Business Phone with an adjustable 4.3-inch color LCD screen that you can easily and flexibly find the comfortable viewing angle according to the personal and environmental needs. 2 x Ethernet ports, 10/100/1000 PoE support "Adjustable Screen ", Built-in Bluetooth 4.2, Built-in Dual Band Wi-Fi (2.4GHz & 5GHz 802.11ac), Opus codec support, Built-in USB 2.0.