Satisfyer launched a strong one smartphone app vibration penis ring, giving men a little new excitement experience, instant locking! A narrower soft silicone ring sticks the body,To further control blood flowLet the sponge are in a constant state in a long time, thicker hard! WARNING: Keep the product away from children. DO NOT expose the product or the charging device to humid places, direct UV or sunlight for an extended period. NEVER immerse or rinse the charging device in water or other fluids. If your toy appears to function abnormally, turn it off. Product is a reuseable after wash. DO NOT use this product with more than one person. DO NOT place any object inside the cup for use. Safety Precautions: Always clean the product before and after use. We recommend using water-based lube with your toy.