- Fully adjustable twin flash heads on a circular bracket - Guide number 22 - Built in transmitter to control compatible Speedlites - Suitable for use with all Canon Macro lenses - 9 Custom Functions for customisation - Flash ratio control (8:1 to 1:8 power in 1/2 stop increments) - Powered by 4 AA batteries (alkaline, lithium, Ni-Cd or Ni-MH)
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