Powerful potency vacuum at the touch of a button. The automatic vacuum pump from Mr Boner provides effective, fun penis and potency training. Fully automatic and convenient at the touch of a button. A powerful motor offers enormous suction power in 8 modes with different intervals and intensities. A release button ensures safe handling with quick pressure equalisation.nThe transparent cylinder with measuring scale (cm and inches) quickly and conveniently generates the suction vacuum. The penis can swell to its maximum size and shape. The suction modes and battery charge level can be checked on the LED display. Included are 2 silky soft silicone sleeves with different diameters for a perfect seal between the cylinder and the body. The motor pump with display can simply be unscrewed for easy cleaning. This allows the cylinder and cuff to be cleaned separately. Rechargeable, including USB charging cable. Total length 29 cm, insertion depth 19.8 cm, outer diameter 6.3 cm, inner diameter 5.9 cm. Cuffs: Inner diameter 3.6 cm/2.5 cm, stretchable. Weight 283 g. Materials: silicone, ABS, TPC.