I use it for a few days and I won. The teeth are clean and smooth! The timer is very convenient to share mouth wash in 4 areas ... and be sure not to forget anything. I selected following the article published by a famous consumer magazine where the brush is ranked in 2nd place ... I did not hesitate long with the other first classified whose price is almost double for a notes at higher sentence. For less than 30 euros, a bargain ... and the Amazon service is still as good, which makes it even better! Hopefully it will last ...