avoid buy a true sonicare [SEP] the lifespan of this device seems to be quite limited a couple of years ago i bought of these for my boys one of them stopped working after a couple of weeks was able to return it to amazon and get a replacement and the other stopped after a little over one month the replacement stopped working after about one month as wellthe big problem with this toothbrush is the battery compartment since it is using throw away batteries a bad thing by itself there is a need for a lid to allow removal insertion of batteries at this price the lid does not close tightly and water creeps in eventually the entire thing stops workingpros for this toothbrush short life due to almost inevitable water damage use of throw away batteriesmy recommendation avoidspend a few more and get a true sonicare you will not regret it i have been using sonicare tooth brushes for almost years now my first one was replaced after more than years mostly because i wanted a new one my current is alive and kicking and it is likely to last for many more years if i do not choose to replace it