This is our second sonic-care unit. The last one lasted around 3 years. The new one now has a speed button for a more aggressive brushing. We like it. The flossing is a little more powerful too. I have a very hard time using and threading floos between my teeth. This solves that problem. 5 Stars!!
What a great product, this thing works flawlessly and my gums and teeth have never been healthier, You're missing out if you don't have one of these and your oral health is suffering