Real Feel. Better than Real Real Skin. Waterproof vibrations. Phthalates free RoHs Compliant materials. Separate compartment for vibrating bullet. Materials Masturbator Thermoplastic Elastomers TPE Bullet Vibrator ABS plastic. Bullet vibrator requires 3 LR44/AG13 batteries. Size masturbator length 6 inches width 3 inches height 3.5 inches. Vibrating bullet length 2.25 inches diameter .75 inch.