Terrible!
I would never start a review out saying a product is terrible.  Well, this one is and its upsetting.  From the start the tooth brush was falling apart on the first use.  I had pieces of bristle in my mouth after each use.  The design is bad as well.  Front of the replacement brush has a raised area that hurts your mouth.  It is very uncomfortable and the black is hard plastic.  This brush did not hold up after one use.
Rating: 1 stars