Introducing Chromecast UltraDelivers everything you love about Chromecast plus faster processing speeds and up to 4K Ultra HD & HDR picture quality*. Chromecast Ultra works with iPhone®, iPad®, Android devices, Mac®, Windows®, and Chromebooks.
I got this device to be able to cast in ultra HD which is exactly what it does. I've never had issues with it. Easiest and fastest way to cast something from your phone to TV and better than browsing everything from your smart TV which takes a whole lot longer when doing it thru your remote control.