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Hign-concerned Chemical : None Material : Non-toxic ABS,silicone Origin : Mainland China Number of Pieces : One Unit Item Type : Pumps & Enlargers Product description:Material: Non-toxic ABS,siliconeWeight: 470g-1300g.Color: Clear.Red.Blue.Size: as shownUse schedule as belowHow the Water Pump worksThe  Water Pump  functions by creating a vacuum seal against the pubic area of the user, enclosing the flaccid penis. When the pump is pushed     downwards against the body, the bellows compress and water is ejected from the end of the pump via the open valve. When released the bellows     expand and the valve closes, creating a partial vacuum inside the pump. This causes the penis to expand and fill with blood, creating an erection.     Re pumping increases the vacuum, and so increases the size of the erection.     Machine Gun  The user controls the valve by rotating the valve cap clockwise to lock the valve and anticlockwise to unlock the valve. When the valve is locked     the internal vacuum cannot be released. This position is used when pumping or using the handball pump. When unlocked the valve cap can be     pressed inwards against the spring. This opens the valve and allows air or water back into the body of the pump, thereby partially or fully releasing     the vacuum.  The vacuum in  Water Pump is created by the elastic recoil strength of the bellows gaiter pump, so the user cannot exceed the safe  partial vacuum levels allowed under European and USA medical regulations. Recommended UseIn order to obtain optimum benefit from the     Water Pump     and to avoid inappropriate use which may cause discomfort, you are strongly advised to     follow the instructions as outlined below:BEFORE FIRST USE: Wash your Water Pump  using warm, clean soapy water and rinse thouroughly.  • Ensure your pubic area is reasonably well trimmed. This will facilitate the vacuum seal against the pelvic seat.  • A relaxation period of a few minutes in a warm shower or bath is required to allow the testicles to soften, allowing them to remain free from the     sealing area thereby avoiding any discomfort.  • Apply only the minimum amount of vacuum pressure necessary to achieve an erection. Excessive vacuum pressure and over vigorous pumping     may result in bruising or injury to the penis.  • To benefit the most in erection hardness and optimal blood flow, it is best to remove the device every 2-3 minutes and allow the penis to retract.     Massage the penis in the flaccid state for 2 minutes, then re apply the device and repeat the process. You should do this a maximum of 3 times     in any 15 minute session.     Machine Gun  • Do not use the     Water Pump     for more than 15 minutes in any period of 24 hours.

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