1.with SBC patent connector system,ensure LED cabinet seamless jiont,with no looseness of power supply, no flicker signal,no shining, no blank screen, 2.excellent led, high viewing angle 110 degree,water proof, damp proof,anti-ultraviolet radiation: good uniformity in brightness automatically according to its environment brightness, 3.SBC intelligent users,SBC design special LED player as the proffsional software edit and play.