Most outdoor camping showers are gravity-fed, meaning you hang them - usually in a bag - above you and let the power of gravity create the water flow from an attached shower head. This camping shower is different. Powered by a USB-chargeable battery, this electric shower pump can suck water up from whatever source you have on-hand and spray it through the shower head. Whether you've got water stored in a bucket or tub, a large container or even flowing from a nearby stream, just submerge the pump tube into the water source, turn the pump on and enjoy. The included 3.7V charging cable lets you recharge via any standard USB port. The rechargeable battery can be used for approximately 60 minutes of continuous use. Also includes a built in light for showering in low-light conditions. Please note that this is a pump only and does not heat the water.