this review title is: useless product and the content is: useless product most powerful as claimed i think not the motor battery combo in this thing is so weak that as soon as i touch it to the skin of my foot it stops moving to get it to rotate at all i have to touch it so gently to my skin that all it does is tickle any harder contact than that and it just stops.there are other information for this review, one is this reviewer did purchase it and the other is 2 people think this review is helpful.