How is a water penis pump different from an air pump? Both kinds use a cylinder that fits over the penis and a mechanism that lowers the pressure inside, drawing blood into the shaft. An air pump removes air. A water pump is filled with warm water first, and the pressure is created by pushing water out. Water surrounds the skin evenly, and the maker of the H2O says water pumps tend to work more quickly and efficiently than air pumps. This model can be used either way.
H2O Water Penis Pump: wet or dry, rechargeable
The Nasstoys H2O is a rechargeable penis pump built for two modes. In the bath or shower, you fill the cylinder with water, place the penis inside and start the pumping sequence. Out of the water, it works as a conventional air pump. It is made of ABS and silicone and is listed as waterproof.
It charges by USB. This listing is for the blue version of the pump.
Best for: For people who want a temporary boost in fullness before sex or solo play, and who like the idea of pumping as part of a bath or shower routine. The powered pumping suits anyone who does not want to squeeze a hand bulb.
At a glance: Water or air use · Waterproof · USB rechargeable · ABS and silicone
Key features
| Water mode |
Fill it with water and use it in the bath or shower. |
| Air mode |
Works out of the water as a traditional air pump. |
| Rechargeable pumping |
A built-in rechargeable unit runs the pumping sequence for you. |
| Waterproof |
Listed as waterproof, so it is safe to take into the water. |
| ABS and silicone |
Built from ABS and silicone, as listed by the maker. |
Specifications
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Materials: ABS, silicone
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Modes: Water or air
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Water rating: Waterproof
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Power: USB rechargeable
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Color: Blue
How to use
Charge the pump first and read the instructions in the package. For water use, stand in the shower or sit in the bath, fill the cylinder with comfortably warm water and place the penis inside so the base seals against your body. Start the pumping sequence and let pressure build gradually. For dry use, do the same without water, with a little water-based lubricant around the opening if you need it. Keep sessions short, around 10 to 15 minutes as general guidance, and release the pressure at once if you feel pain. Rinse and dry the pump afterward.
Care
- Use water-based lubricant only if you need any, as the pump has silicone parts.
- Rinse the cylinder with warm water and mild soap after each use and let it air dry.
- Never boil it or put it in a dishwasher, as it contains a motor and battery.
- Dry the charging point completely before you recharge it.
- Stop and release the pressure if you notice pain, bruising or numbness.
More on materials in our material safety guide.
Frequently asked questions
Can I use it without water?
Yes. The maker states it can be used out of the water as a traditional air pump, as well as filled with water in the bath or shower.
Do I have to pump by hand?
No. It is a rechargeable pump with a pumping sequence that you start once the penis is inside the cylinder. Charge it by USB before use.
Are the results permanent?
No. A pump draws blood into the penis for a temporary increase in fullness. We make no medical or permanent enlargement claims for this product.
What size is the cylinder?
The information we have gives no cylinder length or diameter. Check the packaging or the product images if you need exact dimensions before you buy.
Is it safe to submerge?
The maker lists the pump as waterproof and describes using it in the bath or shower filled with water. Dry it fully before charging.
Pump wet or dry
Add the H2O Rechargeable Water Penis Pump to your cart for plain packaging, privacy-safe billing and a mystery gift in every order.
For adult use only. Read the instruction manual before first use. Specifications are the manufacturer's.
