I bought this and was concerned from other reviews that this would not be powerful enough, however, this is very powerful! I have a difficult time having an orgasms and this worked the first time on one of the lowest speeds. Don’t listen to other, this packs a punch! I also love all of the settings. I recommend this product, I am so glad I bought it. It also works nicely with the Lelo’s Luna balls inserted during use. Oh, and it does work on sore muscles too!