Can't tell you what cube it is, but the stickers remind me of the Cubesmith Mosaic set: http://cubesmith.com/3x3x3.htm
If you pop an edge and corner it may be easier to identify the model.
well umm..uhh....i think it has center caps but i couldnt get them off and inside the cube, the pieces r sort of hollow...its a little bigger than a normal 3x3 and its very lightwight and kinda noisy...but moves well