Small and Powerful USB Rechargeable Bullet from ML Creation. Overview: Environmentally friendly plastic. 8 vibration modes - Auto cycle modes can be chosen. Rapid Charger NOT recomended for charging. 40 minutes of charging = 1 hour of use. Water resistant. L37mm, Diameter 30 mm ML Creation 6-month warranty covering manufacturing defects only from date of purchase. Normal wear and tear, negligent handling or misuse are not covered.