Yealink Ultra-elegant Gigabit IP Phone 4.3″ 480 x 272-pixel color display with backlight, Opus codec support, Dual USB ports, T4U Auto-P template unified, T4U firmware unified, Up to 16 SIP accounts, Dual-port Gigabit Ethernet, PoE support, USB headset and EHS support, Wi-Fi via WF40/WF50, Bluetooth via BT40/BT41, USB recording, Supports expansion modules, Stand with two adjustable angles, Wall mountable.