With built-in Godox 2.4G wireless X system, TT600 is compatible with AD360II-C, AD36011-N,TT685C, TT685N, X1T-C, X1T-N, etc. Utilizing Godox 2.4G wireless X system, TT600 can be triggered and controlled by only a X1T-C or X1T-N transmitter (sold separately). GN60 (m ISO 100, @105mm), 22 steps of power output (1/1-1/128). Support Mult/S 1/S2 modes, 20-200mm auto/manual zooming. In the 2.4G wireless transmission mode, when used as a master unit, TT600 can set its group as M/A/B/C/D/E; when used as a slave unit, TT600 can set its group as A/B/C/D/E.There are 1~32 channels to be chosen.