– 1: cold shoe use the same design of the SLR camera, and the flash can mount on perfect than others.
– 2: 1/4″ screw on bottom make it fits most light stand or tripods.
– 3: 120 degree form each cold shoe make the light more equality than the 90 degree one.
– 4: a 1cm umbrella hole on the center for holding umbrella.
– 5: a 3.5mm trigger which make you onle need a trigger for 3 flash, instead of the 3 recevier, reduce cost.