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:B: white+black Material:ABS+stainless steel Size:14 x 8cm Package Contents: 1 x Water 1 x USB cable 1 x English instruction manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.