Safe Material: free drinking water dispenser, 304 stainless steel, high density ABS plastic, no , and no smell.<br> High Compatibility: The electric pumping device suitable for pure bottled drinking water, suitable for a of models gallon barrel without pry the lid.<br> USB Rechargeable Battery: Built in rechargeable 1200mAh battery. Can used for 30-40 or around 4-6 bottles of 5 gallon water once full . No need to charge every day.<br> Easy to Use: Simply fasten the small pump on the bottle mouth. One switch operation, totally hassle free even for kids and elders.<br> Note: This drinking water pump is suitable for gallon barrels with a 2.16-inch (5.5cm) neck.<br> Operating Voltage: DC 3.7V<br> Power Rating: 3.8W<br> Charging Time: 3-4 Hours<br> Charging: -USB Charging Cable<br> Suitable for: 2,3,4,5 Gallon Water Bottles<br> Size: 2.9*5.1 inch/7.5*13cm<br> Hose Length: 21.7inch<br> Pipe Length: 4.7inch<br> Instructions:<br> Connect the silicone hose and insert the silicone hose to the bottle. Then fasten the water pump<br> Press the button to pump out the water<br> Press the button again to stop pumping<br> Charge with the -USB cable when out of battery<br> colour: Black + white<br> Material: ABS+stainless steel<br> Package Contents:<br> 1 * Water Pump<br> 1 * Inlet pipe<br> 1 * Outlet pipe<br> 1 * -USB Charging Cable<br> Only the above package content, other products are not included.<br> Note: Light 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.