be mischievous with this portable vibrating waterproof bullet, for discreet pleasure or to share with someone else. Length 2.5 inches. Girth 1.1 inches. bnaughty is designed to pander to your deepest whim with its compact oval shape, its silky touch, and pitter-patter vibrations. be in control, or let your partner play with its four-speed operation. this item takes aa batteries.