Even though the Vizio 4K Ultra HD Smart TV comes with basic Amazon functionality, you still need to use an external device like the Amazon Fire TV Stick if you want to take advantage of Amazon apps, games, music, and screen mirroring.
Fortunately the Amazon Fire TV Stick works well over HDMI with the Vizio 4K Ultra HD Smart TV, using Amazon to create a better overall Smart TV user experience.
What's even better is that the Vizio remote control will also control the Amazon Fire TV Stick. No need to keep on switching between remote controls.
Vizio's own smart TV functions are simple enough to use especially for the everyday user, but if you want to graduate to something with more capabilities that is still easy to use, the Amazon Fire TV Stick is a great option.