TV, 55 inch / 140 cm UHD Smart TV black LED55-SC680K Display technology: D-LED|LCD Resolution: 3840*2160 Video processor: MSTAR Contrast: Mega Contrast Image quality index (IQI): 2000 Screen diagonal (Inches | cm): 55’’ / 140 cm Sound power (Watt RMS): 16 (2*8) Dolby: Yes Audio Mode: POP, Music, Dialogue