This TV with XR Contrast Booster precisely controls light for brighter pure black pictures Experience billions of vivid, lifelike colors powered by millions of self-illuminating pixels This mount comes fully assembled, with installation hardware and cable management that allows cables to run along down the arms With a +3 to -10 degree viewing angle and a VESA mounting compatibility of up to 400mm x 400mm, you can get the most out of this mount The LED indicator glows blue when working