It gives you a vibrant, cinematic picture with support for 4K Ultra HD, Dolby Vision, HDR and HDR10+ (4K HDR content and a 4K HDR compatible TV is required to enjoy the 4K HDR picture). Simple and intuitive to use, the Amazon Fire TV Stick 4K enables fast streaming in Ultra HD resolution with great sound, with quicker app starts, and supporting super-fast Wi-Fi 6.