433MHz Wireless Triggering: Godox TT520III(Godox TT520II Upgraded) flash equipped with a integrated 433MHz wireless receiver, when used with the standard RT-16 transmitter, which supports 16 channels of wireless triggering when used in conjunction with the camera, easily achieve flash synchronization and remote control smooth Universal Hotshoe Flash: Godox TT520 III flash speedlight featuring a single contact hotshoe design, widely compatible with Canon, Nikon, Sony, Fuji, Olympus and other brands—ensuring a seamless fit across your gear(please confirm if your camera has a single-contact Hotshoe before purchasing) Please NOTE: Godox flash TT520 III is a fully manual flash, It does not support TTL automatic exposure or High-Speed Sync; Requires 4x AA batteries(Sold Separately); Besides, NOT compatible with Sony ZV-1F, A9III, A99, A77, ...