It is a little pricey, so fortunately I received one as a gift from my parents. It does, however, work fabulously. It is very easy to use, and easy to travel with. I believe the charge lasts up to two weeks. The only downside is the holding case (what it plugs into) is kind of flimsy and not well made, in my opinion. But the brush itself works fantastically, I have had wonderful results since using it, and even my dentist commented that my teeth look great. I had never brushed for two minutes straight before, so the timing mechanism on this helps me make sure to get a good brushing.