Unique Vibrating Penis Ring - Male training penis ring exercise your erection, make your cock longer, stronger and longer lasting. Adjustable Size - This vibrating lock ring has a buckle size adjustment design, suitable for men with different ranges of penis sizes, this sex toy has a total of 3 sizes, choose the right node according to your own situation, and move the buckle to a reasonable position node. Premium Silicone Material - The cock ring is made of skin-friendly, super flexible, comfortable, secure and stretchable rubber, which is firm yet comfortable. Portable Size - The size of the lock ring is 4.66in * 1.57in * 0.95in, the portable and compact size provides you with a lot of convenience, whether you go to travel or work, you can carry it with you, your small bag or your pocket Can be installed. USB Pin Charging & Waterproof: The vibrating ring comes with an original charging cable for 40 minutes of charging and 40 minutes of use. The male penis ring is waterproof, easy to clean and use Discreet Packaging - The penis ring is privately packaged, and shipped discreetly to avoid your embarrassment and ensure absolute privacy.