Hanns.G ST558MBW. Display diagonal: 1397 mm (55 "), Display brightness: 500 cd/m², HD type: Full HD. Number of loudspeakers: 2 pcs, RMS rated power: 15 W. HDMI version: 1.2. Cable lock slot: Kensington. Swivel angle: -20 - 20 °, VESA mounting interfaces compatibility: 400 x 200 mm