Amazon.com : Godox Xpro-C 2.4G X System TTL Wireless Flash Trigger Transmitter & 2 * X1R-C Controller Receiver Compatible for Canon Flash : Electronics
Amazon.com : Godox Xpro-C TTL Wireless Flash Trigger for Canon 1/8000s HSS TTL-Convert-Manual Function Large Screen Slanted Design 5 Dedicated Group Buttons 11 Customizable Functions : Electronics
OPAS-C
Amazon.com : GODOX TT685II-C Flash w/X2T-C Trigger for Canon Speedlight Camera Flash E-TTL Speedlite High-Speed Sync, 2.4G Wireless X System Compatible for Canon Flash 5D Mark Ⅳ 6D Mark II 7D 90D