I found, Samsung accessory itself, very solid, good manufacturing practice.
The bracket itself has a jack and USB port, comes with a car charger. So can charge the phone without cable even has the phone rather convenient as taking a little play and therefore damage the strength of such connections. The no problem.
The ball turns the phone into portrait / landscape mode, and tilt as desired, really well. The best system I could have.
The thing to know though, is that the outline that includes the phone is quite stiff, so good, but the first time he should be forced to put a little, but mostly it off, so be careful, because forcing the phone from a little hit and fall if we do not pay attention. But once set and screwed joint, I can assure you that all not move a muscle.
Important, too, there has "relay" for the power button and volume because the hull completely encircling the phone, they are no longer accessible on the such, but on the support. Good also noted for the thickness in the periphery such, the same level as the screen, that fingers will not abut on the support when using the touchscreen.
Really very happy with my purchase, although not really given, but the quality is to go, not like the support of my Galaxy Tab 10.1 that was a cheap accessory for the same price. I recommend it to all owners of the great Galaxy Nexus!