| Features: Support YONGNUO RF602/603 Radio Triggering SystemFully compatible with the RF radio triggering signal of YONGNUO YN650EX-RF, YN685EX-RF, YN685II, YN720, YN685, YN560IV, YN660, YN560III, RF603, RF602; a total of 16 channels and 10,000 IDs (0000~9999) for choice, the effective triggering distance is up to 60 meters. Supports Multi-group Independent Flash ControlSupports 5 groups independent control, realizing remotely controlling the flash mode, flash output and focal length of YN650EX-RF, YN685EX-RF, YN685II, YN720, YN685, YN560IV, YN660, YN560III.(Note: this function needs to be supported by slave unit) Built-in Rechargeable BatteryBuilt-in 350mAh high-capacity rechargeable lithium | |