Works but does not come with any sort of polish.  Yo have to use your own toothpaste,
It takes a little finesse to use the right amount of pressure.  Too little and it does nothing, too much and it bogs down and stops.  It used to come with various cups of polish, now you just get four rubber tips.  However, it did remove some stubborn stains on my teeth using ordinary toothpaste, so yes it does work..
Rating: 4 stars