this review title is: these are great and the content is: these are great had to cut off the hair on top of my head for topical chemo i have a low tolerance for vibration on my head electric toothbrush nearly made me pass out so i got this based on the reviews and it is everything they say quiet low vibration and works well very pleased with my choice.there are other information for this review, one is this reviewer did purchase it and the other is 0 people think this review is helpful.