Safe Material: drinking water dispenser, food grade silicone hose, 304 stainless steel, high density ABS plastic, no toxic, and no smell.High Compatibility: The electric pumping device suitable for pure bottled drinking water, suitable for a of models gallon barrel without pry the lid.USB Rechargeable Battery: Built in rechargeable 1200mAh battery. Can used for 30-40 or around 4-6 bottles of 5 gallon water full . No need to charge day.Easy to Use: Simply fasten the small pump on the mouth. One switch operation, totally hassle free even and elders.Note: The drinking water pump is suitable for gallon with a Applicable barrel type: barrel barrel, threaded PC barrel applicable capacity: 4.5L5L7.5L10L11.3L15L18.9LPlease confirm the size of your neck purchasing.Colour:A: black+whiteMaterial:ABS+stainless steelSize:14 x 8cmPackage Contents:1 x Water 1 x USB cable1 x English instruction manualOnly the above package content, other products are not included.Note: Light reflection 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.