There are four different speeds on this toy. Low, Medium, High, and a "extreme" pulsation. The high, and extreme pulsation is pretty much a lie though. To use you just click the cap of the toy.
Really the only thing I liked about this toy is the head and body of the toy because of the thickness. That along with a little vibe is pretty good. It isn't really loud at all, just a bit buzzy.
Also it is waterproof! Which I haven't tried out, because I was afraid of it melting in the water. Jelly stuff kind of makes me iffy.