Avoid. Buy a 'true' Sonicare [SEP] The lifespan of this device seems to be quite limited. A couple of years ago, I bought 2 of these for my 2 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 well.<br /><br />The big problem with this toothbrush is the battery compartment. Since it's 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 working.<br /><br />Pros for this toothbrush:<br />- low price.<br /><br />Cons:<br />- short life due to almost inevitable water damage<br />- use of 'throw away' batteries<br /><br />My recommendation: avoid.<br /><br />Spend a few more and get a true Sonicare. You won't regret it. I've been using Sonicare tooth brushes for almost 10 years now. My first one was replaced after more than 5 years, mostly because I wanted a new one. My current is alive and kicking and it's likely to last for many more years if I don't choose to replace it.