With more power, a lightning-fast processor, support for 802.11ac Wi-Fi, and a new antenna design, Fire TV Stick 4K allows you to enjoy a more complete 4K Ultra HD streaming experience.
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. Fire TV Stick 4K has more storage for apps and games than any other 4K streaming media stick.
Now you can control your compatible TV, sound bar, and receiver with new power, volume, and mute buttons. Just press and ask to easily find, launch, and control movies and TV shows.
****Please check below link if Use Your Amazon Fire TV in a Different Country: