YONGNUO YN685EX RF On camera Light Master Slave Speedlite GN60 TTL 1 8000s HSS 2s Recycle Time with 2.4G Wireless blac

Feature: 1. (Built in 2.4G Wireless Trigger System)Can work as a master or a slave unit, and fully compatible with RF radio triggering signals from other YONGNUOu0027 speedlite. Supports 16 transmission channels and 10000 wireless radio ID, which makes it easy for multi flash lighting. 2. (Supports Multi group Flashes Independent Control)When as a master unit, the camera flash is able to control 5 independent groups to realize remote control of flash mode, flash output and focal length for YN650EX RF YN685EX RF YN320EX YN685(II) YN720 YN560 IV YN660 YN560 III. 3. (Supports Optical Transmission Wireless Slave Flash)In optical transmission wireless flashing mode, YN685EX RF can be set as a slave unit to receive optical transmission wi