Also, it has additional features that will improve pictures shot with the speedlite. By flipping the DLC LED light up, the back side has a white reflective surface that can be used to bounce the speedlite improving flash shots, especially in locations with high ceilings.
Additionally, the DLC LED Light can be mounted directly to the camera's hot shoe, even Sony DSLR's as a special adapter is included for the Sony style shoe. Finally, if less light is needed, the unit can be switched from 60 to 30 LED's.