It is a 100% boar bristle brush (some are nylon and some have nylon and boar bristle). You can get the same effects for a lot less. I have a 100% boar bristle brush from Goody and it was less than $100 and it does a better job on my hair than my other (more expensive) 100% boar bristle brush.
There isn't much that's really distinctive about it other than the price and the fact that it may retain the bristles a little longer than other brushes, but it still performs the same as other brushes, most likely.