The highest display resolution of the UE40JU6770 is 4K Ultra HD. That's over four times the display resolution of the most frequently found HD type of Full HD. 4K Ultra HD TVs have a resolution of 3840 x 2160 pixels.
A 4K Ultra HD HD type is actually the best display resolution amongst all televisions of a similar type and age to the UE40JU6770.
The worst display resolution amongst comparable types of TV is HD Ready.
4K Ultra HD TVs have a resolution of 3840 x 2160 pixels.
We compared all the other 4K Ultra HD TVs to this TV and we think the Samsung UE48JU6445, and the LG 40UF671 (£424.00) which is cheaper is also worth considering.