Ozone Cock Ring Bunny Blue Vibrating Cock Ring features 10X of vibrations. Ultra powerful. Rechargeable. USB port. Vibrating cock ring features: 10 functions. 100% silicone. Ultra powerful USB controller. Waterproof vibrations. Phthalates free, RoHS compliant materials: Sleeve 100% Silicone, Controller, Bullet Vibrator ABS plastic. Charging period: initial charging time 8 to 10 hours, subsequent charging time 2 hours. Estimated time of use when fully charged: 60 minutes. Total length 3.5 inches, ring diameter 1.5 inches, circumference 5 inches, power cord length 32 inches.Rechargeable vibrating ring, no batteries necessary.