You can tell the shell isn't Microsoft but that doesn't bother me, it does it's job well, just be careful when inserting the batteries as on these cheap replacements it's really easy to knock the contacts off if you jam the batteries in!
Whilst the colour is ever so slightly off from the Xbox 360 controller, it's not noticeable unless you are looking for it. Also, the item in the picture is what is being replaced, as the replacement has only the image of the batteries etched in. Works like a charm though for when the original contacts become rusted from the corrosive acid contained within. Considering buying a couple more, if I do, will certainly purchase these.