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 with WINGONEER Diffuser Updated version of YN568EX-II Build in Receiver Worked with YN622C YN622II-C YN622C-TX YN560IV YN560-TX RF605 RF603II and RF603 2.4G wireless speedlite with high guide number of GN60,the maximum sync speed is up to 1/8000s 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