The Godox Thinklite Camera Flash TT520 II supports wireless triggering functions with its built-in wireless signal. This flash enables 433MHz wireless transmission with the RT transmitter and 16 channels triggering. It has a Guide number 33 (m ISO 100) and capable of 1/300s-1/20000s flash speed as to promote clear and vivid images. With 3 flash modes (M, S1, S2), it provides improved versatility and usability. For a full flash control, TT520 II offers 0-90 vertical rotation and 0-270 horizontal rotation.