Don't waste your money!!!
I bought three of these units to practice with as a portable lighting system before I invested hundreds of dollars for Nikon units. First time I used them one of the units would cycle and discharge (not flash just discharge). Sent it back and received a replacement unit within a few days. Second time I used them one of the units kept cycling up and flashing. Another one would only fire at full power every other shot and it did not matter how long I would wait between shots. Bottom line: these units are cheaply built and are unreliable. But I am sure that is why the price is so low.
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