I purchased the flash, when he came on the market in the SONY version. Lightweight, super compact, great feel .... ... only he did not work with my SONY RX10. I sent an email to Nissin in Hong Kong. A week later wrote me Nissin I was right and they had updated the firmware. I should send the flash to the German importer, who play the firmware on. Three days later, I had returned the updated flash. I would have preferred that everything worked the same immediately. But with such a fast service is the lack "forgiven". In everyday life, it works perfectly. I am excited about the great functionality and performance in a small housing. Why not make the competition? The flash has mE received the TIPA Award 2014 rightly.