Whoa! I don't know how the beads do it, but they definitely do it. This rabbit is not like other rabbits. It is like a turbo rabbit that vibrates, rotates and tickles. There are over 10 different settings, so if you like it gentle one day and rough another its got you covered. The buttons are even lighted so if you want to set the lights low and just have some fun the rabbit is there for you. It's a little thicker than other rabbits and that definitely was not a problem, but I did have to pull out some lube to go with it. Even with my fingers all slick I was able to have a good time with my bunny. I am so in love with this thing.