good if it lasts [SEP] the brush worked great for the first two months i was surprised at how long the batteries lasted the rechargeable ones went at least a month before needing charging when i took out the batteries for charging this time there was water in the battery compartment and rusting i recharged batteries dried out unit and put in batteries and the brush wont work no more i have used the rehargeable versions for years without problems but this purchase was a mistakeupdate dec spoke with customer service and they are sending a replacement unit very easy process i will update to three starts for excellent customer service will give the new unit a try and update review again