There are endless Android boxes for the TV. But most boxes use Android as a system. That in itself is not a bad thing. But complicated to use on the TV.
That's why Google has created a special system especially for TVs - Android-TV or Google-TV.

What is the difference between Android and Android-TV?
The main difference is in the handling. Android has been developed for operation with the finger (touch). Actions are executed by touching or swiping.
Of course, this is difficult to do on a TV device. Some Android boxes have a mouse function built into the remote, but this is also very difficult to use.

That's why Goolge has a special system for such TV boxes - Android-TV. Android-TV can be comfortably controlled via the remote control.
Navigation is done with the direction keys left, right, up and down. Confirm with the OK key. However, apps have to be specially customized for the Android-TV, which usually results in a layout change. For this reason, there are also much less apps than usual in an Android-TV Play Store.

But finding an Android-TV box is not easy, because many manufacturers and sellers call their boxes "Android TV box".
Therefore, here is a small overview of which manufacturers really use an Android-TV in their boxes:

- Nvidia Shield TV
- Nvidia Shield TV Pro
- Xiaomi Mi Box S
- Mecool KM1
- Mecool KM2
- Mecool KM6

In addition, some TV manufacturers already use Android TV as an operating system:
- Philips
- Sony
- Xiaomi

I hope you understand now what is the difference between Android and Android-TV.