RAM Horny Cocktie Vibrating Ring Black features 10 functions of wonderful vibrations. 100% Silicone. Simple to operate. Push button control. Phthalates free, RoHS compliant materials: ring Silicone, Bullet Vibrator Abs plastic, fiberglass. Length total 6 inches, Bullet Vibrator 2.25 inches. Vibrating cock ring requires 3 LR44/AG13 batteries, incorporated