Yealink SIP-T43U Business Phone - 3.7" 360x160-pixel graphical LCD with backlight - Dual firmware images - Opus codec support - T42U (pending)/T43U/T46U/T48U Auto-P template unified - T42U (pending)/T43U/T46U/T48U firmware unified - Up to 12 SIP accounts - PoE support - USB headset & EHS support - Wi-Fi via WF40/WF50 - Bluetooth via BT40/BT41 - I/O: Dual RJ45 w/ PoE (IEEE 802.3af) class 3, 2x USB 2.0, 1x RJ9 (4P4C) handset port, 1x RJ9 (4P4C) headset port - SIP-T43U - 12 Months Limited Warranty - Open Box

Manufacturer Warranty: 12 Months Limited Warranty

Manufacturer Contact Info: http://www.yealink.com/,