https://finance.yahoo.com/news/battle-4k-streaming-boxes-apple-google-amazon-roku-194554583.html

If you have an HDR screen and an HDR movie to watch, hoo boy: the quality hits you between the eyes. Much brighter brights, much darker darks; more detail in those bright and dark places; and more shades in between. More shades of color, too. Really fantastic.

ot a single TV network or cable channel broadcasts anything in 4K. If you own a 4K television, and you want to watch 4K shows and movies, you have two choices: Buy a 4K Blu-ray player and new movies on disc—or stream your shows online, from services like Netflix, Amazon, Hulu, iTunes, Google Play, Vudu, and YouTube." data-reactid="30">Still with us? OK, good—then here’s another dirty little secret about 4K: Not a single TV network or cable channel broadcasts anything in 4K. If you own a 4K television, and you want to watch 4K shows and movies, you have two choices: Buy a 4K Blu-ray player and new movies on disc—or stream your shows online, from services like Netflix, Amazon, Hulu, iTunes, Google Play, Vudu, and YouTube.