Amazon Firestick 4K - 2nd Gen WiFi 6 (2023) The Fire TV Stick 4K is the next generation of our most popular 4K streaming stick with Wi-Fi 6 support. From playoffs to premieres, experience it all like you're there with support for cinematic 4K Ultra HD. Experience vivid color and brightness with support for Dolby Vision and HDR 10+, immersive sound with Dolby Atmos, and smooth streaming with Wi-Fi 6. It includes the Alexa Voice Remote with dedicated power and volume buttons to control compatible TVs, soundbars and receivers.