LG 55UL3J-B 55" 4K UHD 16/7 Digital Signage Display - Portrait & Landscape - 3840x2160 (4K UHD) - Panel: IPS - Contrast Ratio: 1300:1 - 400nit - 3x HDMI, 2x USB2.0, LAN, Audio Out - External Control: RS232C In / Out, RJ45 (LAN) In - 55UL3J-B, 3 year warranty