Powerful inside and out the elb400 power pack builds on the success of elinchroms quadra units to provide photographers with highly portable and convenient on location lighting equipped with an intuitive oled display the elb400 provides photographers with advanced features such as strobo sequence and delayed flash modes built in skyport and enough charge for 350 full power 424ws flashes this set pairs the elb400 with two of elinchroms pro heads each weighing only 280g and small enou