JUNK!!!
There's inexpensive (same quality, lower price), cheap (lower quality, lower price) and then there's JUNK, lower price but not worth a tenth of that price.  The first head stopped moving after about 2 weeks.  I hoped that didn't foretell my luck with the other three.  It didn't.  The first one broke Friday morning.  By Sunday evening, the remaining three had quit.  One last exactly 2 minutes, the length of time that the Oral B reminder timer takes.  USELESS CRAP.  Look elsewhere, these are certainly no bargain.  I would give these zero stars if that was an option.  Amazon should be ashamed.
Rating: 1 stars