There is not much to say except that this device makes it all so exactly how it was advertised.
Even the ADI mode of Sony (TTL extension) is very well done.
The batteries last for a long time, I made about 90 pictures on vacation with lightning, and the four 2000mA batteries are fully yet to 1/3 according to my charger.
It comes naturally to it if I always flashes at full power or just need only a partial service. The other two flashes that I had tested were here but real battery eaters (after approximately 70-80x the batteries were empty).
Possibility of firmware updates have the same time used to make an update to the version 2.0, which was easy and fast. Unfortunately, no USB cable included, but the male has tiny, and often from my digital camera and my 2.5 "HDD. One must normally buy so none.
I also like the "Metz Mecabounce 52-90 diffuser" which makes the light very soft and at direct lightning is a real asset.
Unlike written in some recessions, he is very fit and keeps.
A small negative point, the flash is a bit heavier than the others (about 80g), but he's just better '
All in all a good buy.
I can really recommend this flash.