Godox Ft-16s Trigger kit Remote Wireless Power Control for Godox TT850 TT860 Nikon Canon Flash Speedlite FT-16S only compatible with GODOX VING SERIES speedlite, please ask if you are not sure. Working Radio Frequency: 433mhz; Adjustable Power Level in Manual Mode: 1/128, 1/64, 1/32, 1/16, 1/8, 1/4, 1/2, 1/1 and Of; 1/1 To 1/128 In 1/3rd Stop Increments; Compatible Triggers: Godox Cells Ii Transceiver;(available in our amazon site)