Safe Material: free drinking water dispenser, 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 withoutpry 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: This drinking water pump is suitable for gallon with a 2.16-inch (5.5cm) neck.Operating Voltage: DC 3.7VPowerRating: 3.8WCharging Time: 3-4 HoursCharging: -USB Charging CableSuitable for: 2,3,4,5 Gallon Water BottlesSize: 2.9*5.1 inch/7.5*13cmHose Length: 21.7inchPipe Length: 4.7inchInstructions: Connect the silicone hose and insert the silicone hose tothe . Then fasten the water pumpPress the button to pump out the waterPress the button again to stop pumpingCharge with the -USB cable when out of batterycolour: Black + whiteMaterial: ABS+stainless steelPackage Contents: 1 * Water Pump1 * Inlet pipe1 * Outletpipe1 * -USB Charging CableOnly the above package content, other products are not included.Note: Light 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.