The UE55H6850 has a maximum display resolution of Full HD. That's 75% less display resolution than the most frequently found HD type of 4K Ultra HD. Full HD TVs have a resolution of 1920 x 1080 pixels.
Full HD TVs have a resolution of 1920 x 1080 pixels.
It may also be worth also looking at one of the other Full HD televisions currently available including because of it's better review score, the LG 50LF652 (£549.97).