Materials ABS Plastic Metallic Plating, Silicone. Functions 3 speeds offer a powerful sensual experience. Enjoy peak stimulation and the ultimate in gratification. Warranty information: order with confidence as this item comes with our standard 90 day warranty. Battery information this product includes USB charging capabilities. Measurements 2.5 inches by 0.75 inch mini bullet vibrator. Maximum run time 120 minutes. Maximum charging time 30 minutes. Water resistance. Water resistant, this device means pure pleasure: never mind a splash or two.