4K and High Power Description work in the same way. What this means would be that the horizontal precision on the digital TV screen would’ve been 4000 pixels. In the case of traditional HD TVs, the resolution is restricted to 1080 pixels. You can distinguish by pixel resolution on your own. Verdict  In the last five years, the demand for TV boxes has doubled and, as a result, the market has also been focused on a quantity of these boxes from different brands. We placed a whole handful of them just for the test, but there seem to be two real favorites. The Cubetek 4K portable smart TV box and the JT X96 Android Mini Box.