Featuresr completely compatible with yongnuo 622c and 603 wireless system yn685 supports respectively receiving wireless triggering signal from yn622c yn622c tx yn560iv yn560 tx rf605 rf603ii and rf603r 24g wireless speedlite with high guide number of gn60r the maximum sync speed is up to 18000sr support e ttlmmulti moder supports auto and manual zooming and the flash coverage can be changed between 20200mmr remote control off camera parameters of each speedlite group the flas