display: 4k ultra hd leddisplay size: 55-inchdisplay resolution: 3840x2160aspect ratio: 16:9mains power: ac 110 - 240 v 50/60hzambient temperature: 5 ?c to 35 ?coutput power (rms): 50wbluetooth: yeswifi: yesprocessing power: quad coreuser interaction: simplysharenumber of hdmi connections: 4number of usbs: 2hdmi features: 4k, audio return channelvideo playback formats: h264/mpeg-4 avc, mpeg-1, mpeg-2, mpeg-4, wmv9/vc1, hevc (h.265), vp9subtitles formats support:srt,sub,txt,smimusic playback formats: aac, mp3, wav, wma (v2 up to v9.2), wma-proremote control: yesincluded accessories: remote control, 2 x aaa batteries, power cord, quick start guide, legal and safety brochure, table top standoperating system: android tv 9 (pie)memory size(flash): 16gbpre installed apps: google play movies, google play music, google search, youtube, netflix