Thunder bunny rechargeable ring hops into action with its super powerful motor and 10 vibration modes. Designed to help him stay harder, longer. Simply slide the smaller ring down your shaft, pull the larger ring around your boys and let the vibrating bunny ears work their magic. Material: Silicone. Waterproof, submersible. USB rechargeable. Run time 45 minutes Travel lock feature with manual in box. Dimensions: Length - 9.5cm Inner Diameter - 3.2cm 1 year warranty