What I received was clearly NOT in quality 'refurbished' or anything like that. Someone, the previous owner I think just returned it used and it has never been checked or cleaned. That's rough. Tiny hairs stuck to the underside of the mouse and there are clear signs of wear on the grip pads. On top there is even a spot of somewhat liquid origin. I spent some time cleaning it up and now it's ready to go. But after ordering it yesterday and arriving just as dirty today, Revain needs to do a much better job of verifying listings claiming items need repairs or updates. These are bad people, be careful.