Model nameun80 seriesrf interrestrialscreen resolution3840x2160usb input2bluetoothyes v5.0smart energy savingyesnumber of usb ports2processorquad core processor 4ksurround soundyesdisplay featurelg uhd 4k tv 55 inch un80 seriessound modesultra surrounddigital audio out1oswebosethernet lanyesinterfaces ports4 hdmi, arc hdmi2,2 usb, lan, component, composite in av,rf in,spdif optical digital audio out, wifi,bluetoothbluetooth version5wifi smart tvyesvideo format4kcomposite avyesfeature 1hdmifeature 2usbfeature 3smarthdractive hdrspeaker sound output20w10w per channeloperating system oswebos smart tvnumber of cpusquadips panelyestrumotion refresh ratetm100 refresh rate 50hzcolour nameblacktv display typeledoparating systemwebos smart tv