Great light in perfect operation and an excellent range of software. Bright, not to artificial light, sturdy housing. I can not find a negative point, even in comparison with my original Nikon Speedlight. On The Contrary. Here the price / performance ratio was unique. I was the high guide number important and a good workmanship. Opposite the Metz 2 stars clearly better and more stable. In light and housing quality. Allegedly Nissin's the producer of Nikon Speedlights. Can be good. To recognize No compromise in quality at very good guide Nikon ...... and easy-to-understand menu guidance ........ therefore 5 star !!!