The highest display resolution of the Hisense 55K390 is 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.
We compared all the other Full HD TVs to this TV and we think the 55PFT5500[pl_2860932_price], and the 50PFT6510[pl_2860934_price] both from Philips or the Sony KDL-50W809[plb_2857966_price] which has a better Rating is also worth considering.
If the display resolution of this television is too low for you then you might also want to look at the Philips 55PUT6400[plb_2834163_price] (4K Ultra HD and higher rated), the Hisense LTDN50K321[plb_2936927_price] (4K Ultra HD and higher rated), or the Panasonic TX-55CX400[plb_2955151_price] (4K Ultra HD and higher rated).