I ordered these brushes more or less accidentally. Are just the original and do what they should. Have now ordered to cheap products and use them in daily exchange with the original brush. I'm curious how they relate to each other. After a week is (fortunately) no difference detected. Four stars I forgive because I find too expensive the original brush innately to ask such prices for penny-products is basically a joke. Since you have not chosen for this electric toothbrush, you have to live with it. If the replicas keep like this for just as long, they have earned in any case to a star more ...