Ensure powerful erections with this automatic erection pump with pressure gauge in which you can see centimeter by centimeter how the size of your penis increases thanks to its transparent tunnel and meter. In addition, its ring is made of high quality TPR and very comfortable. When you want to stop using it, just press the easy release button and the pressure will quickly decrease. Characteristics: Automatic erection pump with pressure and centimeters measurement. Quick pressure release system Premium materials: TPR Flexible ring for comfort. Batteries: 3xAAFeel the power of a powerful erection!