The MT 10 Plus 12K Ultra HD Android TV Box sounds like a powerful streaming device that could turn any TV into a smart TV. This refers to the resolution the device can output. 12K is a very high resolution (even higher than most modern TVs), but it's not yet a common standard. While the box can output 12K content, your TV might not be able to display it. Ensure your TV supports 12K resolution to take full advantage of this feature.