Amazon.com : Godox TT600 Camera Flash Speedlite Master Slave Off GN60 Built-in 2.4G Wireless X System Transmission Compatible for Canon, Nikon, Pentax, Olympus, Fuji and Other DSLR Camera with Standard Hotshoe :
Amazon.com : Godox TT685IIC E-TTL GN60 Speedlite Camera Flash, 0.1-2.6s Recycling, 330 Full Power Pops, 2.4G Wireless System, HSS 1/8000s, TCM Instant Conversion, Quick-Release Lock, for Canon EOS Cameras : Electronics