Review title is doesn't last - water gets in [SEP] This would be a good tooth brush had they designed it better.  Water gets inside and stops it from vibrating.  Some times I have to take the top off and separate it from the bottom for a few hours for it to dry out, to get it to work.  Also, gunk builds up inside of it and looks pure disgusting after a few months.  I've had this about 7 months now and I'm tossing it in the trash.