The highest display resolution of the UE55J6370 is Full HD. That's 75% less display resolution than a 4K Ultra HD TV, which is the most common display resolution. Full HD TVs have a resolution of 1920 x 1080 pixels.
Full HD TVs have a resolution of 1920 x 1080 pixels.
Televisions with a higher display resolution that might also be worth considering include the Samsung UE55JU7502 (4K Ultra HD and higher rated).