1.Built-in 2.4G wireless X system & versatile using methods. As a wireless flash trigger(for camera flash, outdoor flash and studio flash); As a wireless trigger for Nikon speedlites; As a wireless shutter release trigger; As a flash (without X system) trigger with 2.5mm sync cord jack. 2.16 groups and 32 channels to wireless control and trigger. Add 01 to 99 wireless ID settings, which can only achieve triggering when the channels and wireless IDs of the master and slave unit are set to the same, avoiding signal interference effectively. 3.Fully support TTL autoflash, 1/8000s high-speed sync, multi flash, manual flash, flash exposure compensation, TCM transform function, magnification function, one-shoot & multi-shoot setting, group modeling lamp control, group zooming, adjusting all groups' output value simultaneously, etc. 4.Extra-large LCD panel, 5 group buttons and 4 function buttons convenient manipulation. Only weights 80g for great portability. Support Type-C USB firmware upgrade and wireless triggering by 2.5mm sync cord jack.