This multipurpose Crossbones vibrating cock ring not only keeps you harder than granite and brings you Cross Bullet System simultaneous stimulation, but it also comes with a marble extension for anal tickling or clitoral stimulation! By allowing you to run a bullet across the top of the shaft for clitoral stimulation, or perpendicular against the bottom of the penis for extreme tightening vibration, the Mighty Marble effortlessly brings extreme pleasure and intensity. Then if you're ready for the next level, insert a marble (choose from 3 sizes) into bottom of sleeve for added pleasure.Includes 6 LR44 Batteries and comes with Zero Tolerance Toys 1-year Warranty. All our toys are phthalate free, non-toxic and waterproof.