Penis pumps are more than just sex toys, they`re tools that can help boost sexual health by being a non-prescription erectile dysfunction treatment. Water Penis Pumps tend to work quicker and more efficiently than traditional penis pumps so you can spend less time pumping and more time enjoying the results. The Nasstoys rechargeable H20 pump is unique because not only can you use it in the bath or shower by filling it with water, then placing your penis inside and beginning the pumping sequence. It can also be used outside of water, as a traditional air pump.andnbsp;When water is used in tandem with pumping it helps encourage blood flow into the penis, especially warm water because it opens up the pores of the skin, allowing it to stretch more as the penis is elongated. Using water for pumping in general helps creates uniform suction and stimulation around the penis. Watch your shaft get bigger and bigger with the see-through cylinder, and track your growth with the included measuring tool built into the cylinder. The Water Pump is recommended for folks measuring 7 inches long and 1. 8 inches in diameter when fully erect. This will provide you plenty of room to expand so your shaft can reach its full potential. The Water Pump is made from plastic and comes with three different-sized tube bases for a snug fit, so you can create a tight seal. Works using waterUse in the shower or bathIncludes 3 different size tube sleeves for a snug fitWhisper quietLong cylinder and accurate gaugePhthalates freeWaterproofMaterials: Pump - ABS, Sleeves - SiliconePump Size: Length - 11.5, Diameter - 2.8, Circumference - 8.25Three Sleeve Sizes: Small - 1, Medium - 1.25, Large - 1.5Rechargeable: Charging Time - 60 minutes, Working Time - 50 timesVoltage - 3.7V