I give 9 stars, but of course it could have got 10. For there was such a difference in the teeth from the first brushing! Coatings that I tended not to be able to get away disappeared immediately! Feels so clean the teeth! Stylish and good product in the attractive case. Until the mobile holder when ... How to get there a phone with only two hands? Well I have succeeded once, but the app was not able to keep tabs on me well enough ... So it will be probably not so many more times. But even so thrilled! Have had an oral-b triumph, and another oral-b before then, but there is a big difference!