The JJC SF-33 Manual Speed light flash is a manually adjustable variable power output. The flash has a guide number of 33 at ISO 100. The head can be rotated vertically 180 degrees and horizontally 90 degrees. The JJC SF-33 Speedlight Manual has two slave modes where it or the light from the master flash synchronously detects and only flashes of the first flash is ignored when you want to use the red-eye flash.
JJC SF-33 Manual Camera Flash/ Speedlite for Nikon Canon Camera(Black)