Skyworth SUE9550. Display diagonal: 139.7 cm (55"), Display resolution: 3840 x 2160 pixels, HD type: 4K Ultra HD, Display technology: QLED, Screen shape: Flat. Smart TV. Display brightness: 300 cd/m², Response time: 8 ms, Contrast ratio (typical): 1200:1. Wi-Fi, Ethernet LAN. Product colour: Black