Automatic suction for continuous powerful erections. The transparent Max Boost Pro Flow penis pump from Pump Worx is designed for all men who are looking for an effective workout for their penis and potency. With powerful suction at the touch of a button, it stimulates like the best oral experience. Just sit back and enjoy. This device offers relaxing pleasure to improve erection strength and hardness for long-lasting performance. The handy penis pump is ready for immediate use and works completely automatically. Simply press a button to switch between eight different suction modes and quick pressure release. The LED display lights up in different colours to show the current internal pressure. The automatic power pump can also be used in water. It has a transparent cylinder with a measuring scale and a removable silicone ring. Rechargeable with a USB charging cable included in the scope of delivery.