I purchased this toothbrush for my 4-year old daughter, because we were having trouble keeping her teeth, well, clean. I don't know what happened, but suddenly her teeth started looking really stained all the time. Once we started using this toothbrush, we saw an improvement almost immediately. Her teeth looked shiny and clean. I didn't know if she was going to freak out about the vibration, but she was fine with it. And I love that Sonicare adds the little musical alerts when you are supposed to switch sides. She still laughs a bit when that alert sounds. The brushes recharge quickly and they are easy to clean. They come with some stickers to personalize them a bit. Great purchase for young kids!