Unwrapped, first looked if there is a software update, this draufgespielt, Los photographed. The appropriate settings until all are playing together with the user manual (unfortunately only in English) well to accomplish once all comes down you need Flash and Transmitter only turn and both are immediately ready for use. Unfortunately, there is an indication of the battery status and if they are sparce zickt the transmitter rather rum. For the price an absolute must if you own a 600-RT Speedlite :-)