First of all, any problem on time. By cons in the box where there are well written 7 + 1 brushes, and saw eye was never opened, I have 6! And if you look a little closer you realize that the finishes are not as good as the original, however, there has marked "oral-b" on each brush is why I think it '... is a counterfeit! After a month of use: the head no longer rotates, it only vibrates, I strongly advise not to buy this product ...