I purchased one a few weeks ago,
It works as described however when in use with my 3GS the volume gradually and uncontrollably turns itself down, when i remove my iPhone the "Volume Up" gets stuck in a loop, i cant turn my iPhone down again without a hardreset!
When I saw it, I thought, "oh no, it's to small and the sound quality is bound to be rubbish." How wrong I was. It is compact, smart looking and the sound quality is outstanding!! I am very impressed and would recommend it to anyone.