Hisense 55" Display (55B4E31T) - Resolution: 3840 x 2160, Contrast Ratio: 1200:1 (typ), Brightness: 500 nits (typ), Built in speaker: 8W x 2, Connectivity: WIFI: 2.4G/5G, LAN: 10/100Mbps , Wall Mountable: 400mm*400mm, Operating System: Android 8.0