Yealink SIP-T33G, Business Phone, 2.4” Display, 320 x 240 pixel, colour display with backlight, Yealink HD Voice, PoE support, Opus codec support, Up to 4 SIP accounts, Local 5-way conferencing, Support EHS Wireless Headset, Unified Firmware, Support YDMP/YMCS, Wall mountable, 1x RJ9 (4P4C) handset port, 01 Year Limited Warranty Equipped with powerful chip, the T3 series owns a stronger computing ability and more upgraded functions, which ensures a higher productivity and smoother office experience. Due to great performance, T3 series is capable to extend more services for different business demands.