Most Powerful USB Rechargeable Finger Bullet from ML Creation. Overview: Medical Silicone .Environmentally friendly plastic. 10 vibration modes – Auto cycle modes can be chosen. 1 hour of charging = 1.5 hours of use. Rapid Charger NOT recomended for charging Water resistant. L43.8mm, Diameter 18.1mm ML Creation 6-month warranty covering manufacturing defects only from date of purchase. Normal wear and tear, negligent handling or misuse are not covered.