Safe Material: BPA free drinking water dispenser, silicone hose, 304 stainless steel, high density ABS, no toxic, and no smell. High Compatibility: The electric pumping device suitable for pure bottled drinking water, suitable for a variety of models gallon barrel without pry the lid. USB Rechargeable Battery: Built in rechargeable battery. Can used for 30-40 days or around 4-6 bottles of 5 gallon water once full charged. No need to charge every day. Easy to Use: Simply fasten the small pump on the bottle mouth. One switch operation, totally hassle free even for kids and elders. Good Partner for Camping, Kitchen, Workshop, Garage, etc. Note: This drinking water pump is suitable for gallon barrels with a 2.16-inch (5.5cm) neck. Please confirm the size of your neck before purchasing. Colour:white Material:ABS Package Contents: 1 * Water pump 1 * USB data cable 1 * Hose Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.