a. Light
emitting uniformly, no dark spot, no dark edge.
b. whole housing is extrusion aluminum, with top level surface painting, products looks and feels excellent.
c. Branded power driver built-in, stable and flicker-free. When taking photo or video, there is no screen flickering on the mobile.
d. very good
heat dissipation, to make sure LED PCB long lifespan >50000 hours.