Award winning 7 Speed RO-80m bullet Designed with comfort and pleasure in mind Silky soft body-safe silicone 100% waterproof Big-Boy is a serious prostate vibrator for all big boys who like nothing more than to play with big toys. Big-Boy stimulates your prostate and perineum, but is entirely hands free so you can lie, sit, stand or do whatever you want to yourself or your partner whilst you are delivered your most powerful orgasmic experience ever!It is powered by a removeable 7 function bullet vibrator which you can use to stimulate your other favourite erogenous zones!Ride it hands-free, which lets you use your hands to pleasure yourself or a partner.It is 100 waterproof and fully submersible for fun in the bath or shower.1 x 1.5 volt N-size / LR1 is included.