This 55-inch screen uses quantum dot technology in 4K Ultra HD for vibrant, true-to-life images. Dolby Vision HDR contrasts bright highlights with dark shadows, so you can catch subtle details. Plus, DTS Virtual-X speaker 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 NS-55F501NA22 55" Class F50 Series QLED 4K UHD Smart Fire TV is ready for an unforgettable night of entertainment.