Godox X1C 2.4G Wireless Flash Single Receiver for Canon EOS DSLR Camera (X1C-R Receiver) 2.4G wireless transmission, 32 channels, support up to 1/8000s HSS function Featuring multi-channel triggering, stable signal transmission, and sensitive reaction Provides up to 100 meters further transmission distance and creative triggering methods Use with X1T-C transmitter (sold separately) to trigger camera flash which support Canon E-TTL II autoflash Wireless remote control and grouping system; support 5 groups and 32 channels to triggering flash, with Big and Clear LCD Panel for easy operation