Besides being LOUD, it is basically just a vibrator with different tips. I bought it to massage my calf after a knee replacement. It took so long to get that by the time I got it, the pain was almost completely gone. Anyway, I don't understand how this can be comfortable for anyone to use. You can't really move it around on whatever body part you are trying to massage because it hurts to do so. The tips are a rubber/plastic and don't move smoothly over your skin without feeling like it is burning your skin off. All it does is vibrate, not really massage. It's stupid and I'm returning it.