Automatic battery-operated magnifying pump Material: ABS / silicone Operating mode: 3 speeds, battery powered Power supply: Requires 3 AAA batteries Size: Total length (with controller): 30 cm, usable length: 20 cm Description: Fully automatic vacuum pump with three speed modes. Air is removed from the cylinder by means of an electric motor, the power of which can be adjusted with the upper button. The lower button is used to depressurise the cylinder.Provides convenience, precision and ease of use thanks to the battery-powered function. A modern solution for men seeking the ultimate in comfort and quality.