LG 55SM5KE 55-inch Full HD Digital Signage LED Display - Resolution: 1920 x 1080, Response Time: 12ms, Contrast Ratio: 1100:1, Brightness: 450nits, Viewing Angle: 178 / 178, Built-in Speakers: 2 x 10W, Connectivity: 1 x USB 3.0, 3 x HDMI, 1 x DisplayPort-in, 1 x DVI-D, RJ-45, RS232C-in, 1 x Audio Line-in, 1 x DisplayPort-out, RS232C-out, Audio Line-out, Wall Mountable: Vesa (300 x 300mm), Operating Lifespan: Up to 50 000 hours