Amazon 4-Series 50" Television Fire TV 4K Ultra HD HDR LED TV with Alexa
4K Ultra HD (2160p). Amazon Alexa via remote. - Amazon Series-4 Fire TV 4K50N400U 50" Smart 4K Ultra HD HDR LED TV. 4K Ultra HD 3840 x 2160p. Energy efficiency class (HDR). On mode power demand (HDR).