The SCREAMING O LING-O has been designed to provide maximum stimulation with the use of the tongue. Fit the ring below at the base of the tongue, with bullet at the top of the tongue. Press button to turn on. The battery life is 40+ minutes. Disposable fun with under tongue snug knobs. Easy On/Off button Pleasure bumps for enhanced pleasure Super-stretchy gel band to fit any sized-tongue Contoured shape designed to stay in place Super-soft, safe SEBS food-grade silicone Long-lasting, super-powered Waterproof