Main Features: 
-With 433MHZ wireless transmission, RT transmitter and 16 channels to triggering 
-1/300s-1/2000s flash duration, clear and vivid images 
-3 flash modes: M, S1 and S2 for improved versatility and usability. 
-8 variable flash output from 1/128 to full, meeting your flashlight demands. 
-Multiple auto-self protections for power saving and against overheating. 
-Added with sync socket, and a quick charge port for external power pack. 
-Integrated reflection board, giving a highlighted point on the eyes 
-Build-in wide panel diffuser, creating soft and natural illumination 

Technical Date: 
Model: TT520II 
Guide number: 33(m ISO 100) 
Flash mode: M, S1, S2 
Vertical rotation angle: 0-90 degrees 
Horizontal rotation angle: 0-270 degrees 
Power: 4Xaa Batteries (Alkaline or Ni-MH are usable) 
Lighting times: 100-150 times (AA alkaline batteries used) 
Recycle time: approx. 0.1-5s (AA alkaline batteries used) 
Color temperature: 5600±200K 
Wireless frequency: 433MHz 
Channel: 16 
Workable distance: 15m 
Flash duration: 1/300s-1/20000s 
Dimensions: 190x75x55mm 
Net weight: 310g