Update to my review: Now this toothbrush will not charge. Not only did it provide less power than any previous sonicare I owned, it had a shorter overall life before being dead. Original review: This toothbrush has much less power then my previous Sonicare. I have owned several of these over the years. This one is by far the worst. Even at its highest setting, I can not get the power I got from my previous Sonicare brushes. If I push harder against my teeth, it just stops vibrating. The gap between the end of the toothbrush and the handle is larger then it should be, but it does not push down any further. After being a Sonicare user for many years, I am switching to Oral B.