Lighting heads dont get much more portable than this 424 watt seconds of wallop when used in conjunction with the elb400 weighing in at 280g and fitting in the palm of your hand this action variant is optimised for high speed photography boasting flash durations as short as 15700th of second freezing subjects in motion fully compatible with prior quadra components and power packs as well as the latest elb400 system the quadra pro head offers the power flexibility and creative potent