Producer lg main characteristics type led tv graduation year 2021 smart tv so operating system webos processor lg a7 ram 4 gb display diagonal 55 " matrix type ips display coverage glossy (anti-glare) curved screen no resolution 3840x2160 screen format 16: 9 hdtv video mode support 1080p full hd 1080i hd 4k uhd supported input signal formats 1080p, 1440p, 2k, 4k pixel response time 4 ms frame rate 60 hz hdr support hdr10 brightness settings 400 cd / m2 contrast parameters 4000: 1 viewing angles 178 ° sound and multimedia power of sound 20 w. number of speakers 2 audio system dolby digital decoder digital tuner dvb-s2 (satellite), dvb-s (satellite), dvb-t2 (terrestrial), dvb-c (cable)