Worked for many years...
I think I've owned this for five years now and it is still working great.  My only issue is that the brush starts to come apart after maybe 6 months of use, and pinches your lips gums etc, forcing you to change the brush.  Probably should change it anyway, but I don't like it when a company forces things on you this way. This is the first toothbrush I ever owned which has a brush which falls apart and hurts you like this.
Rating: 4 stars