This 55-inch screen uses 4K Ultra HD technology for vibrant true-to-life images. HDR10 contrasts bright highlights with dark shadows so you can catch subtle details. Plus DTS Virtual-X audio technology delivers life-like sound from your TV. Access live over-the-air channels and streaming—and control it all with your voice. Ask Alexa to launch apps search for titles and more. The Insignia 55 Class F50 Series LED 4K UHD Smart Fire TV is ready for an unforgettable night of entertainment.