Fomito Godox TT685C E-TTLII 2.4GHz Wireless Master/External AutoFlash Speedlite &X1T-C Transmitter Trigger HSS for Canon EOS Rebel T6i T6S T5 6D 70D 7D 5DIII 5DS 1DX cameras, 580EXII 600EX-RT flashes Radio Master & Slave Modes built-in Godox 2.4GHz X Radio System. With Godox X1T-C TTL Transmitter on camera, trigger perfectly TT685C flash, range to 100 m. GN60, HSS to 1/8000s, 1/128  1/1 output control (1/3rd increments). Optic Master & Slave Modes for Nikon Optic Wireless System. X1T-C provides a full group style interface allowing up to 5 groups to be individually set to either TTL, Manual, or Off.