Ozone Orgasmic Bullet Purple Vibrator features 10X of vibrations. Ultra powerful. Rechargeable. USB port. Vibrating bullet features: 10 functions. Ultra powerful USB controller. Waterproof vibrations. Phthalates free, RoHS compliant material ABS powerful. Charge period: initial charging time 8 to 10 hours, subsequent charging time 2 hours. Estimated time of use when fully charged 45 minutes. Total length 2.25 inches, diameter 1 inch, circumference 3.25 inches, cord length 32 inches. Rechargeable bullet vibrator. No batteries necessary.