Looking at the Canon 600EX-RT, I bought a set of five after using the 580's for a while, these work, period. The radio system far outshines the previous optical slave when using the Canon Transmitter or one of the other 600's as a master. Only what is in the pictures is included. Does not includes the filter holder and the two warming filters it came with. S/N 0402104487

I'll ship in a large usps priority mail box unless buyer prefers another method of which I'll charge accordingly.