YONGNUO YN685 E-TTL HSS 1/8000s GN60 2.4G Wireless Flash Speedlite Speedlight for Canon DSLR Cameras Compatible with YONGNUO 622C/603 wireless system + Andoer&reg; Lens Cleaning Cloth Completely compatible with YONGNUO 622C and 603 wireless system. 2.4G wireless speedlite with high guide number of GN60. Remote control off-camera parameters of each speedlite group. Ultrafast charging recycle system, the fastest recycling time up to 3s. The maximum sync speed is up to 1/8000s.