The Certo compact flash units are specially designed for you as a dedicated amateur, semi-professional user, or career starter.

• Small, lightweight, and easy to operate
  
  
• Short flash durations and fast recycling
  
  
• Sturdy and reliable, with active cooling
  
  
• Hensel EH quick-change reflector mount with metal fitting
  
  
• Interchangeable flash tube with integrated protective glass
  
  
• 16-channel radio synchronization (with the optional Cactus Transceiver V6)
  
  
• Integrated into one of the most versatile professional flash systems
  
  

The Certo 400 offers max. 200 Ws of power; in all other respects, the unit is identical in construction to the Certo 200.

You can download the user manual for the device here under Service -> User Manuals.