Unlock a complete 4K Ultra HD experience - With support for leading HDR formats, Dolby Vision, Dolby Atmos Audio, access to the latest 4K content, and a lightning-fast processor, Fire TV Stick 4K enables you to experience the beauty of 4K Ultra HD movies and shows on your TV. Finding 4K Ultra HD content has never been easier on Fire TV—just press and ask, “Alexa, find 4K movies,” or browse recommendations on your home screen.