There are a lot of streaming services (Hulu, Netflix, Sling TV) nowadays and if you want to use them, you need a streaming device. Apple TV is a streaming device that you can use to watch movies, listen to music, play games, and view photos.
The most current (4th generation) version of Apple TV features a dual-core A8 processor, a new touch remote, allowing swipe-to-select functionality and Siri voice support, and a new operating system… tvOS.
There are 2 versions, the 32 GB priced at $149 and the 64GB at $199. Keep in mind that, since Apple TV streams content from a cloud without necessarily storing it, the difference between the two devices is buffering, not storage space.
Access all your streaming apps from one central device for a unified viewing experience. Not only that, but stream from your iPhone or iPad to your Apple TV.